Wochentag-Ermittler
Herausfinden, auf welchen Wochentag ein bestimmtes Datum fällt.
Which weekday is a date?
—
Funktionsweise
- The weekday is computed on the proleptic Gregorian calendar (the international standard) directly from the parsed date, never from a millisecond difference.
- Centuries are handled correctly: 1900 and 2100 are not leap years (divisible by 100 but not 400), and the engine’s unit tests pin those cases down.
- The ISO week number and the day-of-year are shown alongside, since the three answers usually travel together in planning and reporting.
Gut zu wissen
- Works across the full Gregorian range the engine supports, centuries back and forward.
- Dates from eras that used the Julian calendar historically will not match historical local usage; the Gregorian assumption is stated rather than hidden.
- Pair it with the Week Number tool for reporting weeks and the Business Days tool for working-day math.
Verwandte Tools
Datumsrechner
Kalenderwoche-Rechner
Die offizielle ISO-Kalenderwoche für jedes Datum bestimmen.
Tool öffnen
Datumsrechner
Datumsdifferenz-Rechner
Exakte Zeitspanne zwischen zwei Daten in Jahren, Monaten, Wochen und Tagen.
Tool öffnen
Datumsrechner
Tage bis zu einem Datum
Berechnen Sie, wie viele Tage bis zu einem zukünftigen Ereignis verbleiben.
Tool öffnen
DatumsrechnerEmpfohlen
Altersrechner
Exaktes Alter auf den Tag genau in Jahren, Monaten, Tagen und Stunden ermitteln.
Tool öffnen
Häufig gestellte Fragen
How far back and forward does it work?
Across the full Gregorian calendar range supported by the engine, centuries back and forward, including leap-year exceptions like 1900 and 2100.
Is the Gregorian calendar assumed?
Yes, the proleptic Gregorian calendar, which is the international standard. Dates from eras using the Julian calendar will not match historical local usage.
Why does the weekday matter for planning?
Weekday drives business days, delivery windows, event scheduling, and recurring routines. The finder pairs with the Business Days and Week Number tools.