Formula for changing calendar date into fiscal weeks

Ginger_in_need

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Nov 9, 2017
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Hi all!

This is my first time post. Normally read other's post to help my problems, but I am having trouble this time.

My fiscal year began on Sunday 27, 2017, and has 52 fiscal weeks, and can't figure out this week formula.

I have 46,000 lines of data all with different dates. If a date is between Sept 17, 2017 thru Oct 2, 2017 then I need to spit out week 1, and so on and so forth.

Can any help me with the formula?

Thanks!
 

Excel Facts

What did Pito Salas invent?
Pito Salas, working for Lotus, popularized what would become to be pivot tables. It was released as Lotus Improv in 1989.
Hello, welcome to MrExcel

If it’s just for this year then you can use this formula

=INT((A2-DATE(2017,9,17))/7

where date is in A2 - format result cell as number with zero decimal places.

If if you want a formula for any year then that’s possible if you have a fixed rule for when year starts
 
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