Just had to reset to a new account as couldn't login. Anyway, I have an issue which im wondering someone can help.
I need a formula to work out a custom week number whereby the Saturday AFTER last Friday in December is Week 1 of the year. Is there a formula that can derive this or do I have to use vba (I think I do a custom function in VBA).
Pretty sure its a combo of weeknum/weekday/date and working out the days, but I haven't got it working perfectly. Friday 31/12/2021 would be week 53 for instance, but 01/01/2022 would be week 1. 25/12/20 would be week 52, Sat 29/12/18 would be week 1 etc etc. Can anyone help? Normally I solve it within an hour of asking for help so hoping the charm works again!