Date Calculator — Days Between Dates & D-Day

Start Date

End Date

Days Between Dates

—days

Start Date—

End Date—

Total Days—

Weeks—

Months (approx.)—

About Korean D-Day Counting

In Korea, anniversary counting is different from Western culture. Koreans count the start date as Day 1, not Day 0. So "100 days" in Korea is actually 99 days after the start date. This is especially important for couple anniversaries and baby milestones (100-day celebration, 1st birthday).

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This calculator counts the number of days between two dates.