_WeekNumberISO and GUICtrlCreateMonthCal return different weeknumbers for same day

[Jimblack@…]

I suspect _WeekNumberISO function is 'off by 1' since it returns a week number 1 greater than GUICtrlCreateMonthCal. This would result in 53 weeks in this year instead of 52. this is in 3.3.0.0 and 3.3.1.4.

[blackja@…]

I realized I put my name not my email address - sorry

[J-Paul Mesnage]

From ISO standpoint the week 53 exists. I don't know if we are in a year as such.
Jos our ISO expert will answer.

[Jos]

I get for both week 44 and here ​http://en.wikipedia.org/wiki/ISO_week_date you can find info about the ISO weeknr which can be 52.

Jos

[JimBlack]

Thanks for your wikipedia link. I understand now. This is not a bug, this is misuse of function. I will write my own UDF to calculate the NON-ISO week number since I could not find one in Autoit. Thanks for your help.