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Hi Jake_201,
Thanks for visiting Microsoft Community.
In Excel, Ctrl + Shift + ; inserts the time in 24-hour format (the date is defaulted to January 1, 1900). While Ctrl + ; inserts the current date (the time is defaulted to 0:00).
If you need to obtain both, you can use these two shortcuts in sequence within a single cell, or you can use the NOW function like =NOW().
Hope this helps you confirm the situation.
Best Regards,
Jonathan Z - MSFT | Microsoft Community Support Specialist