I need help calculating the number of days between two specific dates, but I’m running into confusion with whether the end date should be included or not.
For example, between March 1, 2024 and March 10, 2024, some tools say it’s 9 days, others say 10. I’m guessing it depends on whether both dates are counted?
What’s the standard approach when calculating days between dates:
-
In Excel or Google Sheets?
-
In programming (like JavaScript or Python)?
-
In booking/travel date ranges?
Also, is there a good online tool that handles leap years and date logic accurately?
Thanks in advance — I’m trying to avoid making mistakes on a project deadline calculator.