API « GetDowntimeDetails » : period Last Month not correct

API « GetDowntimeDetails » : period Last Month not correct

Hi,


I have a problem with REST API « GetDowntimeDetails » when i use it with argument period=11 (for Last Month). 
  • During the month of February, i get the data from the 2nd to the 31st of January (January 1st is missing).
  • During the month of March, , i get the data from January 30 to February 28 (January 30 and 31 should not be).
Do you have a solution ?  (see attach system information screenshot)
Thanks.
Regards.

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