D-Day Counter
Count the days until (or since) any date and find your 100th, 1000th day and other anniversary dates.
Days until a date
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Anniversaries (100 days, 1000 days)
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| Anniversary | Date | Days left |
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How the D-day count works
Days remaining are shown as D-number and days already passed as D+number. Try it with an exam, a trip, a due date or a deadline.
Does day 100 include the first day?
Couples' and babies' anniversaries (popular in Korea) usually count the first day as day 1, so day 100 falls 99 days after the start. Uncheck "Count the start date as day 1" to start counting from the next day.