Days between two dates: the calculator subtracts the start date from the end date. Leap years and different month lengths are taken into account automatically. "Include end date" adds one day.
Werktage are all days from Monday to Saturday that are not public holidays (§ 3(2) BUrlG). Working days are Monday to Friday excluding public holidays. Both include the start and end date.
Deadlines: if a period starts with an event, that day is not counted (§ 187(1) BGB); the period ends when its last day expires (§ 188 BGB). If the end falls on a Saturday, Sunday or public holiday, § 193 BGB moves it to the next working day. The calculator is not legal advice.
Public holidays: all statutory public holidays of the chosen German state under the state holiday laws, movable holidays derived from the date of Easter. "Today" is determined by your browser; no data is stored.