Certified tool
Trip Duration Calculator
Turn check-in and check-out dates into nights, calendar days, and weekday vacation days.
Trip span
3 nights
Sep 11, 2026 (2026-09-11) through Sep 14, 2026 (2026-09-14).
4 calendar days (inclusive). 2 weekday vacation days and 2 weekend days. Holidays are not excluded.
If both dates move one day later (2026-09-12 through 2026-09-15), the trip has the same number of weekday vacation days and 2 weekend days. The night count stays the same. Holidays are still not excluded.
Assumptions
- Inputs are civil YYYY-MM-DD dates. Math uses Hinnant ordinals, not UTC midnight.
- Nights are exclusive (check-out minus check-in). Calendar days are inclusive.
- Weekday vacation days are Monday–Friday in the inclusive span. Holidays are not excluded.
- This is trip semantics, not DateToolMage generic days-between.