cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
ericonline
Community Champion
Community Champion

Need help with diffing times (commented code :) )

Hello, (didn't want this to get buried because the other thread was marked with a Solution")

 

I really need help determining the difference between two times. This is quite a challenging undertaking! 

 

Two Date+Time cards: 

dateDiffWithHoursAndMinutes.png

 

Code (get your wading boots on!): 

//Concatenate the diffed Hours, ":" and diffed Minutes//

Concatenate
(

//Convert the diffed Hours and Minutes to Text//
Text(

//Perform DateDiff to determine difference between Hours//
DateDiff(

//Use DateTimeValue to format the text string to Hours//
DateTimeValue(

//Get start date, hour and minutes into a format that DateTimeValue likes. Note the Char(13)! (clever)//
Concatenate( Text( startDate.SelectedDate,DateTimeFormat.ShortDate), Char(13), Text( Concatenate( startHour.Selected.Value, ":", startMinute.Selected.Value),ShortTime)),"en-US"), DateTimeValue(

//Get end date, hours and minutes into a format that DateTimeValue likes.
Concatenate( Text( endDate.SelectedDate,DateTimeFormat.ShortDate), Char(13), Text( Concatenate( endHour.Selected.Value, ":", endMinute.Selected.Value),ShortTime)),"en-US"), Hours),"[$-en-US]##"), ":",

//Do the same thing for Minutes//

Text( DateDiff( DateTimeValue( Concatenate( Text( startDate.SelectedDate,DateTimeFormat.ShortDate), Char(13), Text( Concatenate( startHour.Selected.Value, ":", startMinute.Selected.Value),ShortTime)),"en-US"), DateTimeValue( Concatenate( Text( endDate.SelectedDate,DateTimeFormat.ShortDate), Char(13), Text( Concatenate( endHour.Selected.Value, ":", endMinute.Selected.Value),ShortTime)),"en-US"), Minutes),"[$-en-US]##") )

But this results in: 

dateDiffWithHoursAndMinutes1.png

 

How do I get the correct times to display? 


Thanks

1 ACCEPTED SOLUTION

Accepted Solutions

Good point - I hadn't tested my logic for when the start date is greater than the end date.

 

One solution is to check whether this is the case, and if so, add a '-' in front of the difference (if you want to indicate that), and make all the calculations with the absolute value (via the Abs function) of the date differences:

"Hours:Minutes: " &
    If(DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
        Minutes) < 0,
    "-", "") &

Text(
    Abs(
        DateDiff(
            startDate.SelectedDate +
                Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
            endDate.SelectedDate +
                Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
            Hours)),
    "00") & ":" &
Text(
    Mod(
        Abs(
            DateDiff(
                startDate.SelectedDate +
                    Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
                endDate.SelectedDate +
                    Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
                Minutes)),
        60),
    "00")

The formula should work now (see the attached app ForumThread134813b.msapp), but it's getting way too big - there's a lot of repeated sub-expressions. PowerApps currently doesn't support reusing sub-expressions, so one technique that I've used in the past is to store those expressions in controls (such as labels), and hide them before saving the app. If we have 5 labels with the following expressions:

lblDiffTotalMinutes.Text: DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
        Minutes)
lblDiffMinutes.Text: Mod(Abs(Value(lblDiffTotalMinutes.Text)), 60)
lblDiffTotalHours.Text: RoundDown(Abs(Value(lblDiffTotalMinutes.Text)) / 60, 0)
lblDiffHours.Text: Mod(Value(lblDiffTotalHours.Text), 24)
lblDiffDays.Text: RoundDown(Abs(Value(lblDiffTotalHours.Text)) / 24, 0)

Then you can reference their values when displaying the time difference to the user:

If(Value(lblDiffTotalMinutes.Text) < 0, "-", "") &
    Value(lblDiffTotalHours.Text) &
    ":" &
    Text(Value(lblDiffMinutes.Text), "00")

This technique is also shown in the attached app.

 

Hope this helps!

View solution in original post

10 REPLIES 10
CarlosFigueira
Power Apps
Power Apps

That's indeed a big expression :). One thing you can use is the Time function - the values passed to it don't necessarily need to be between 0 and 59 for the minutes. If you call Time(1, 75, 0), for example, it will give you a time of 2:15.

 

You can also make the DateTime values by adding the selected date to the time, instead of converting them to string and then back to date/time (that may not work in all languages, for example). So if you use this expression:

Time(
    0,
    DateDiff(
        startDate.SelectedDate +
Time(Value(startHour.Selected.Value), Value(startHour.Selected.Value), 0), endDate.SelectedDate +
Time(Value(endHour.Selected.Value), Value(endHour.Selected.Value), 0), Minutes), 0)

You should get the time difference.

@CarlosFigueira, thank you for taking the time to respond! Its hard to find this info out there. 

 

I'm not able to get the formula quite right though... Its returning actual time of day, not number of hours. I edited your code a bit as I think the startHour field was duplicated. 

Time(
    0,
    DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
        Minutes),
    0)

Please see below for how it reacts: 

timeDiff.gif

 

Notice how its showing TIME not # of hours. And when I change the endDate to another day, the # of hours doesn't reflect. Any more ideas on what I should check? 

Hi @CarlosFigueira. I've been deep in this for a day or so. If I could pick your brain again, It'd be much appreciated. 

 

almost got it, but the minutes is showing negative numbers when calculating hours that span midnight. 

 

The label in the top right reflects the code below. Notice the "-30" in the minutes column: 

diffTimes.png

 

Here is the code that works UNTIL I span midnight (startDate does not equal endDate): 

Concatenate(
    Text(
        DateDiff(
            startDate.SelectedDate +
                Time(
                    Value(startHour.Selected.Value),
                0, 0),
            endDate.SelectedDate +
                Time(
                    Value(endHour.Selected.Value),
                0, 0),
    Hours),"[$-en-US]##"),

    ":",

    Text(
        If(
            endDate.SelectedDate > startDate.SelectedDate,  //This is for calculating hours that span midnight. Without this, the minutes column is WAY off.//
            DateDiff(
                startDate.SelectedDate +
                Time(0, Value(startMinute.Selected.Value), 0),
                startDate.SelectedDate +
                Time(0, Value(endMinute.Selected.Value), 0),
            Minutes),

            DateDiff(
                startDate.SelectedDate +
                Time(0, Value(startMinute.Selected.Value), 0),
                endDate.SelectedDate +
                Time(0, Value(endMinute.Selected.Value), 0),
            Minutes)
        )
    )
)

If you want the data formatted in the hour/minute One way you can implement that is by using the expression below:

Text(
    DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value); Value(startMinute.Selected.Value); 0);
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value); Value(endMinute.Selected.Value); 0);
        Hours);
    "00") & ":" &
Text(
    Mod(
        DateDiff(
            startDate.SelectedDate +
                Time(Value(startHour.Selected.Value); Value(startMinute.Selected.Value); 0);
            endDate.SelectedDate +
                Time(Value(endHour.Selected.Value); Value(endMinute.Selected.Value); 0);
            Minutes);
        60);
    "00")

The idea is that you first retrieve the difference in hours (so even if the difference is more than 24 hours, you'll still have the number of hours. Later you can retrieve the difference in minutes, and take the remainder of the division by 60, to get the number of minutes only.

 

The attached app has some examples of visualizations for the time difference, like in the image below:

ForumPost001.PNG

Hi @CarlosFigueira. I really appreciate you time on this issue. Unfortunately this function is not correct when the startTime minutes value > endTime minutes value. 

 

Example:

  • Start a project at 00:30
  • Finishe project at 10:20
  • Your Hours:Minutes function shows "10:50" but I believe the true answer is 9 hours and 50 minutes. 

timeIncorrect.png

Its very apparent in this example: 

  • Start project at 00:30
  • End at 10:30
  • Hours:Minutes looks good

timeIssue1.png

 

But as soon as startTime minute value is > endTime minute value, the summation is incorrect. 

Here adding 5 minutes ot startTime results in 55 minutes of time being added. 

timeIssue2.png

 

This was stumping me as well which is why I tried the: 

Text(
        If(
            endDate.SelectedDate > startDate.SelectedDate,  //This is for calculating hours that span midnight. Without this, the minutes column is WAY off.//
            DateDiff(
                startDate.SelectedDate +
                Time(0, Value(startMinute.Selected.Value), 0),
                startDate.SelectedDate +
                Time(0, Value(endMinute.Selected.Value), 0),
            Minutes),

            DateDiff(
                startDate.SelectedDate +
                Time(0, Value(startMinute.Selected.Value), 0),
                endDate.SelectedDate +
                Time(0, Value(endMinute.Selected.Value), 0),
            Minutes)
        )

But this results in weird negative numbers in the minutes column. Man! This is not easy! Do you have any other ideas I can pursue? 

I think the answer lies somewhere in using your function for the decimal # of hours and the following: 

Text(Time(9, .91666667 * 60,0),"[$-en-US]hh:mm")

Where "9" is the result in hours, ".91666667" is the result in minutes. 

 

This produces the correct format and such, I just can't seem to figure out how to Split the decimal hours and get them into the above function. 

Good point - I hadn't tested my logic for when the start date is greater than the end date.

 

One solution is to check whether this is the case, and if so, add a '-' in front of the difference (if you want to indicate that), and make all the calculations with the absolute value (via the Abs function) of the date differences:

"Hours:Minutes: " &
    If(DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
        Minutes) < 0,
    "-", "") &

Text(
    Abs(
        DateDiff(
            startDate.SelectedDate +
                Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
            endDate.SelectedDate +
                Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
            Hours)),
    "00") & ":" &
Text(
    Mod(
        Abs(
            DateDiff(
                startDate.SelectedDate +
                    Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
                endDate.SelectedDate +
                    Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
                Minutes)),
        60),
    "00")

The formula should work now (see the attached app ForumThread134813b.msapp), but it's getting way too big - there's a lot of repeated sub-expressions. PowerApps currently doesn't support reusing sub-expressions, so one technique that I've used in the past is to store those expressions in controls (such as labels), and hide them before saving the app. If we have 5 labels with the following expressions:

lblDiffTotalMinutes.Text: DateDiff(
        startDate.SelectedDate +
            Time(Value(startHour.Selected.Value), Value(startMinute.Selected.Value), 0),
        endDate.SelectedDate +
            Time(Value(endHour.Selected.Value), Value(endMinute.Selected.Value), 0),
        Minutes)
lblDiffMinutes.Text: Mod(Abs(Value(lblDiffTotalMinutes.Text)), 60)
lblDiffTotalHours.Text: RoundDown(Abs(Value(lblDiffTotalMinutes.Text)) / 60, 0)
lblDiffHours.Text: Mod(Value(lblDiffTotalHours.Text), 24)
lblDiffDays.Text: RoundDown(Abs(Value(lblDiffTotalHours.Text)) / 24, 0)

Then you can reference their values when displaying the time difference to the user:

If(Value(lblDiffTotalMinutes.Text) < 0, "-", "") &
    Value(lblDiffTotalHours.Text) &
    ":" &
    Text(Value(lblDiffMinutes.Text), "00")

This technique is also shown in the attached app.

 

Hope this helps!

Just bumping this up here. @CarlosFigueira , the sample app you provided here is INVALUABLE to anyone needing to diff dateTimes. I refer to it often.

Thanks again!

hi, it does not work for me, but strangely it does not throw any mistakes with the reference ... they come aan error by the & (dieser Vefehl erzeugt einen Zirkelverweis - was ist das eigentlich?)
i want to draw in a textx box

Helpful resources

Announcements

Tuesday Tip | How to Report Spam in Our Community

It's time for another TUESDAY TIPS, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.   As our community family expands each week, we revisit our essential tools, tips, and tricks to ensure you’re well-versed in the community’s pulse. Keep an eye on the News & Announcements for your weekly Tuesday Tips—you never know what you may learn!   Today's Tip: How to Report Spam in Our Community We strive to maintain a professional and helpful community, and part of that effort involves keeping our platform free of spam. If you encounter a post that you believe is spam, please follow these steps to report it: Locate the Post: Find the post in question within the community.Kebab Menu: Click on the "Kebab" menu | 3 Dots, on the top right of the post.Report Inappropriate Content: Select "Report Inappropriate Content" from the menu.Submit Report: Fill out any necessary details on the form and submit your report.   Our community team will review the report and take appropriate action to ensure our community remains a valuable resource for everyone.   Thank you for helping us keep the community clean and useful!

Tuesday Tip | How to Get Community Support

It's time for another Tuesday Tip, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.       This Week: All About Community Support Whether you're a seasoned community veteran or just getting started, you may need a bit of help from time to time! If you need to share feedback with the Community Engagement team about the community or are looking for ways we can assist you with user groups, events, or something else, Community Support is the place to start.   Community Support is part of every one of our communities, accessible to all our community members.   Within each community's Community Support page, you'll find three distinct areas, each with a different focus to help you when you need support from us most. Power Apps: https://powerusers.microsoft.com/t5/Community-Support/ct-p/pa_community_support Power Automate: https://powerusers.microsoft.com/t5/Community-Support/ct-p/mpa_community_support Power Pages: https://powerusers.microsoft.com/t5/Community-Support/ct-p/mpp_community_support Copilot Studio: https://powerusers.microsoft.com/t5/Community-Support/ct-p/pva_community-support   Community Support Form If you need more assistance, you can reach out to the Community Team via the Community support form. Choose the type of support you require and fill in the form accordingly. We will respond to you promptly.    Thank you for being an active part of our community. Your contributions make a difference!   Best Regards, The Community Management Team

Community Roundup: A Look Back at Our Last 10 Tuesday Tips

As we continue to grow and learn together, it's important to reflect on the valuable insights we've shared. For today's #TuesdayTip, we're excited to take a moment to look back at the last 10 tips we've shared in case you missed any or want to revisit them. Thanks for your incredible support for this series--we're so glad it was able to help so many of you navigate your community experience!   Getting Started in the Community An overview of everything you need to know about navigating the community on one page!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Ranks and YOU Have you ever wondered how your fellow community members ascend the ranks within our community? We explain everything about ranks and how to achieve points so you can climb up in the rankings! Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Powering Up Your Community Profile Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile. Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Blogs--A Great Place to Start There's so much you'll discover in the Community Blogs, and we hope you'll check them out today!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Unlocking Community Achievements and Earning Badges Across the Communities, you'll see badges on users profile that recognize and reward their engagement and contributions. Check out some details on Community badges--and find out more in the detailed link at the end of the article! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Blogging in the Community Interested in blogging? Everything you need to know on writing blogs in our four communities! Get started blogging across the Power Platform communities today! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Subscriptions & Notifications We don't want you to miss a thing in the community! Read all about how to subscribe to sections of our forums and how to setup your notifications! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Getting Started with Private Messages & Macros Do you want to enhance your communication in the Community and streamline your interactions? One of the best ways to do this is to ensure you are using Private Messaging--and the ever-handy macros that are available to you as a Community member! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Community User Groups Learn everything about being part of, starting, or leading a User Group in the Power Platform Community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Update Your Community Profile Today! Keep your community profile up to date which is essential for staying connected and engaged with the community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Thank you for being an integral part of our journey.   Here's to many more Tuesday Tips as we pave the way for a brighter, more connected future! As always, watch the News & Announcements for the next set of tips, coming soon!

Hear what's next for the Power Up Program

Hear from Principal Program Manager, Dimpi Gandhi, to discover the latest enhancements to the Microsoft #PowerUpProgram, including a new accelerated video-based curriculum crafted with the expertise of Microsoft MVPs, Rory Neary and Charlie Phipps-Bennett. If you’d like to hear what’s coming next, click the link below to sign up today! https://aka.ms/PowerUp  

Tuesday Tip: Community User Groups

It's time for another TUESDAY TIPS, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.   As our community family expands each week, we revisit our essential tools, tips, and tricks to ensure you’re well-versed in the community’s pulse. Keep an eye on the News & Announcements for your weekly Tuesday Tips—you never know what you may learn!   Today's Tip: Community User Groups and YOU Being part of, starting, or leading a User Group can have many great benefits for our community members who want to learn, share, and connect with others who are interested in the Microsoft Power Platform and the low-code revolution.   When you are part of a User Group, you discover amazing connections, learn incredible things, and build your skills. Some User Groups work in the virtual space, but many meet in physical locations, meaning you have several options when it comes to building community with people who are learning and growing together!   Some of the benefits of our Community User Groups are: Network with like-minded peers and product experts, and get in front of potential employers and clients.Learn from industry experts and influencers and make your own solutions more successful.Access exclusive community space, resources, tools, and support from Microsoft.Collaborate on projects, share best practices, and empower each other. These are just a few of the reasons why our community members love their User Groups. Don't wait. Get involved with (or maybe even start) a User Group today--just follow the tips below to get started.For current or new User Group leaders, all the information you need is here: User Group Leader Get Started GuideOnce you've kicked off your User Group, find the resources you need:  Community User Group ExperienceHave questions about our Community User Groups? Let us know! We are here to help you!

Super User of the Month | Ahmed Salih

We're thrilled to announce that Ahmed Salih is our Super User of the Month for April 2024. Ahmed has been one of our most active Super Users this year--in fact, he kicked off the year in our Community with this great video reminder of why being a Super User has been so important to him!   Ahmed is the Senior Power Platform Architect at Saint Jude's Children's Research Hospital in Memphis. He's been a Super User for two seasons and is also a Microsoft MVP! He's celebrating his 3rd year being active in the Community--and he's received more than 500 kudos while authoring nearly 300 solutions. Ahmed's contributions to the Super User in Training program has been invaluable, with his most recent session with SUIT highlighting an incredible amount of best practices and tips that have helped him achieve his success.   Ahmed's infectious enthusiasm and boundless energy are a key reason why so many Community members appreciate how he brings his personality--and expertise--to every interaction. With all the solutions he provides, his willingness to help the Community learn more about Power Platform, and his sheer joy in life, we are pleased to celebrate Ahmed and all his contributions! You can find him in the Community and on LinkedIn. Congratulations, Ahmed--thank you for being a SUPER user!  

Top Solution Authors
Top Kudoed Authors
Users online (5,659)