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Import Dates from Excel to Numbers

I managed to import numbers from excel using the following formula B1 "=DATE(1900;1;−1)+A1"


The other suggested one in several forums (DATE(1904,1,1)+1 won't work for me, first because the , must be a ; and second because of the numbers that for some strange reason I needed to change. now it works.

Mac mini, macOS 11.4

Posted on Aug 9, 2021 11:58 AM

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Posted on Aug 9, 2021 2:50 PM

I’m didn’t spend time on the forum with a theory, I just wanted to help people that like me may be searching for a solution. Whether there’s a typo or whatever I don’t know, what I do know is that the formula I posted works on my numbers 11.something. With the comma didn’t work then I tried with the semicolon and now it works. Same for the -1

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Question marked as Top-ranking reply

Aug 9, 2021 2:50 PM in response to Badunit

I’m didn’t spend time on the forum with a theory, I just wanted to help people that like me may be searching for a solution. Whether there’s a typo or whatever I don’t know, what I do know is that the formula I posted works on my numbers 11.something. With the comma didn’t work then I tried with the semicolon and now it works. Same for the -1

Aug 9, 2021 2:32 PM in response to cbprado

Excel has two different date systems. One starts in 1900, the other in 1904. That is why the number is different.


I believe neither of those formulas is correct. The second one has a few typos but the first one is just not right.


Using a -1 in the DATE function will give you a warning triangle. It works but -1 is an out of range value.

In Excel's 1900 date system, 1/1/1900 is day 1. Excel also coded in a nonexistent leap year in 1900. Both have to be taken into consideration. The correct formula for dates starting in March 1900 is

=DATE(1900;1;1)-2+A1


Some regions use a semicolon vs a comma to separate parameters in functions. If you use a comma (not decimal point) as a decimal separator you will use a semicolon in functions.


There have been an awful lot of Excel date questions/post lately. I wonder if a recent release broke the conversion of Excel dates more than it already was.

Import Dates from Excel to Numbers

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