# Increment hijri date by one year

#### YasserKhalil

##### Well-Known Member
Hello everyone
I am searching for a solution to be able to add one year to the Hijri date
this is an example:
Code:
``1437/10/05``
The year 1437 would be 1438

Is there a UDF function that deal with Hijri dates to be able to add days or months or yeas as it is done with Gregorian dates

#### Hui

##### Excel Ninja
Staff member
I would assume Edate(a1,12) would work

#### YasserKhalil

##### Well-Known Member
Thanks a lot Mr. Hui I tried your solution but got VALUE error
As for the links they deal with the conversion between Hijri dates and Gregorian dates .. I don't need conversion I just need to deal with these Hijri dates flexibly ..to be able to add days or months or years
Thanks for offering this great help

#### Chihiro

##### Excel Ninja
Check post#6 from last link provided by Narayan.

That should give you starting point to construct formula.

#### YasserKhalil

##### Well-Known Member
I will give it a try thanks for reply
But please if you have a solution, provide me with it

#### Chihiro

##### Excel Ninja
It will largely depend on how your workbook is set up. Can you upload sample? Most importantly, is the hijri date in date value? Or is it in text format?

#### YasserKhalil

##### Well-Known Member
Here's a sample workbook
I have put a formula that do the task but I need to find a more perfect way to deal with Hijri dates

#### Attachments

• 13.4 KB Views: 8

#### NARAYANK991

##### Excel Ninja
Hi ,

The sole point is whether you will use only Hijri dates in your workbooks or will it be only this workbook or will it be a mixture of both Gregorian and Hijri dates.

If it is the first , then changing your Windows setting allows you to use Hijri dates in Excel the way you will use normal dates. Excel will accept all Hijri dates.

If it is the second or the third , then using the format suggested in the links allows you to enter all dates as Gregorian dates , but displays them as Gregorian or Hijri depending on the cell formats.

In either case , since the EDATE function is working on valid Excel dates , which are stored as Gregorian dates , the formula suggested by Hui will work.

A date cannot be entered in Hijri format unless the Windows setting is changed ; Excel will not accept Hijri dates as valid dates , and arithmetic operations cannot be done on them ; you will have to develop the formulae to do them.

Narayan

#### Chihiro

##### Excel Ninja
Ah, so it is in text format... let me do some research on it.

#### YasserKhalil

##### Well-Known Member
This is the problem for me .. the problem is that I would use both dates in some of my workbooks and I hope to find an easy and flexible way to deal with both of the dates ..

#### Chihiro

##### Excel Ninja
If it was me, I'd convert all dates to Gregorian date and when needed convert output to Hijri date. Rather than try to work with two separate date system.

#### Chihiro

##### Excel Ninja
If its stored not as text but in date value, EDATE(x,12) will return 1 Gregorian year later (i.e. 364 or 365 days later). 1438/22/05 from example given, instead of 1438/10/05

So to get 1 Hijri year later, would be either 354 or 355 days later.
Assuming date is in A1 and is date value, below formula would add 1 year accounting for leap years.

=IF(TEXT(A1,"B2dd")=TEXT(A1+354,"B2dd"),A1+354,A1+355)

So similar logic can be used in UDF.

Last edited:

#### YasserKhalil

##### Well-Known Member
Thanks a lot for this great help Mr. Chihiro..
I tried your formula but it gives me VALUE error ..why?
I tried to change the format of A1 with diifferent formats and the same error
Can you upload a sample workbook with the formula to see the result?

#### Chihiro

##### Excel Ninja
Sure, see attached (Col T:V). Your issue is that your date is stored as text and not date value. You have to first convert your text date to value (either by doing calculation or by constructing Lookup Table), then use formula.

#### Attachments

• 12.7 KB Views: 7

#### YasserKhalil

##### Well-Known Member
Thank you very very much Mr. Chihiro
You are a HERO Mr. Hiro
Thanks for great help in this thread ..
Best and Kind Regards