Hi.
I've been trying to turn dates e.g. 4 October 2019 into the week number of that year. The formula is working, except when the week falls on a number containing a zero, like week 30, or 40 or 50. In that case it returns the serial number of the date.
Welome to the forum.
Try this instead:
=ISOWEEKNUM(A2)
Ali
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Use the WeekNum and ISOWeekNum functions to determine the week number of a date.
These functions differ in how they determine the first week of the year (week 1):
WeekNum uses the week containing January 1 as the first week of the year. The result from this function can range from 1 to 54.
ISOWeekNum uses the week containing the first Thursday of the year as the first week of the year. This follows the ISO 8601 date and time standard definition for week numbering. The result from this function can range from 1 to 53. It is possible that 52 or 53 may be returned for the first days of January since the dates could belong to the last week of the previous year.
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Thank you for the reply. I've tried that, but it still gives the same serial numbers instead of week numbers.
Sorry, I think I replied in the wrong spot. Thank you for the reply. I've tried ISOWEEKNUM, but same return.
Provide a workbook showing the problem, if you have one. Did you look at the workbook I prepared for you? It shows the correct results on the right.
Try this in B2:
=TEXT(MIN(WEEKNUM(A2,2),52),"0")
or, slightly simpler:
=MIN(WEEKNUM(A2),52)&""
Hope this helps.
Pete
Here's your original workbook with both WEEKNUM and ISOWEEKNUM.
Thank you very much. It did not work initially, but after I changed the format to general instead of Date everything worked as it should. I appreciate your help.
You're welcome. Thanks for the rep.
If that takes care of your original question, please select Thread Tools from the menu link above and mark this thread as SOLVED.
Also, you may not be aware that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post in which the help was given. By doing so you can add to the reputation(s) of those who helped.
The second one worked perfectly and it starts January as week 1 and only have 52 weeks in the year. Thank you very much.
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