Date Calculator (D-Day)
Days between two dates, or the date a set number of days before/after
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Count the number of days between two dates, or find out what date and weekday falls a certain number of days before or after a given date. It's handy for anniversaries, countdowns, and deadlines.
How to use
- Choose 'date difference' or 'days before/after' mode.
- Enter the reference date(s).
- The number of days, or the resulting date and weekday, is shown.
FAQ
- Is the start date counted as a full day?
- The 'difference' between two dates is the plain number of days from subtracting the start date from the end date. An option to include the start date (counting it as day 1) is also provided.
- Does it work for past and future dates?
- Yes. Positive numbers calculate a later date, and negative numbers an earlier one.
- Does it tell me the weekday?
- Yes, the weekday of the resulting date is shown alongside it.