How Can I Add/Subtract One Day from Hijri Calendar Using VBA

Hello,

I can Adjust Hijri Calendar (Add/Subtract one or two days) in Window by Changing the registry key using the following VBA Code

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But this doesn't affects Hijri Dates in Excel.

How Can I Adjust The Hijri Calendar days in Excel using VBA?

Hint:
About : AddHijriDate Using Registry key modificaition
https://learn.microsoft.com/en-us/wi...s/addhijridate

I Found this article about Hijri Date Adjustment
https://learn.microsoft.com/en-us/do...ijriadjustment

How Can apply this / or something like this using excel vba?

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