Date Calculator

Calculate the number of days remaining until a target date or the days elapsed since a past date. Track birthdays, exams, events, and milestones with precision.

Select the target date to calculate D-Day

Include Start Day

Frequently Asked Questions

How is the day count calculated?
The calculator counts the number of calendar days between today and your target date. If the target date is in the past, it shows how many days have elapsed.
What is the difference between D- and D+ counts?
D- (D-minus) represents days remaining until a future event, while D+ (D-plus) represents days that have passed since a past event.
Can I save multiple date countdowns?
The current version calculates one date at a time. You can bookmark the page or note down results for tracking multiple dates.
2026 calendar data