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getPastTime(1, 'Month') returning wrong month

I have a monthly flow that adds a row into an enitity for all users. the formula i use is: getPastTime(1, 'Month')


This formula doesn't return September though. I created a seperate flow that use emails me the details


The result of the mail is:

-1 = August 2019
Formula = formatDateTime(getPastTime(1, 'Month'), 'MMMM yyyy')
-2 = August 2019
Formula = formatDateTime(getPastTime(2, 'Month'), 'MMMM yyyy')
-3 = July 2019
Formula = formatDateTime(getPastTime(3, 'Month'), 'MMMM yyyy')
-4 = June 2019
Formula = formatDateTime(getPastTime(4, 'Month'), 'MMMM yyyy')


I can't see what i am doing wrong here.

Frequent Visitor

Re: getPastTime(1, 'Month') returning wrong month

I'm having the same issue. Hope someone can get back about this. The expression I'm using is 

getPastTime(1, 'Month', 'MMMM') and that returns August 2019 instead of September 2019.

Community Support
Community Support

Re: getPastTime(1, 'Month') returning wrong month

Hi @Simon_P ,

Based on the issue that you mentioned, I have made a test on my side, and don't have the issue that you mentioned. The screenshot as below:1.JPG

The result as below:2.JPG

set the Inputs field of the "Compose" action to following:

getPastTime(1,'Month','MMMM yyyy')

set the Inputs field of the "Compose 2" action to following:

subtractFromTime(utcNow(),1,'Month','MMMM yyyy')

Note: It is not necessary to add additional formatDateTime() function to convert the date time value.

On your side, please consider take a try with above subtractFromTime(...) formula, then check if the issue is solved.


If the issue still exists, please consider take a try with the following formula within your flow's action:

addDays(utcNow(),-31, 'MMMM yyyy')

then check if the issue is fixed.


Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
New Member

Re: getPastTime(1, 'Month') returning wrong month

Morning @v-xida-msft,


I've not been able to test this properly yet, as when i use the erroring formula, it is returning the correct data today (2nd Oct). I will need to test again on the 1st.


When it comes to adding the date into an Entity as a date, the formula you gave doesn't work, as it throws the below error:

"message": "DateTime is less than minumum value supported by CrmDateTime. Actual value: 01/01/0001 00:00:00, Minimum value supported: 01/01/1753 00:00:00",


What should i be using to get last month as a date (for entry to an entity)


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