--:--:--

Dia da semana de uma data

Descubra em qual dia da semana cai qualquer data passada ou futura.

Which weekday is a date?

Como funciona

  1. The weekday is computed on the proleptic Gregorian calendar (the international standard) directly from the parsed date, never from a millisecond difference.
  2. 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.
  3. The ISO week number and the day-of-year are shown alongside, since the three answers usually travel together in planning and reporting.

Informações úteis

  • 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.
Calculadoras de datas

Calculadora de número da semana

Descubra o número da semana ISO de qualquer data do ano.

Abrir ferramenta
Calculadoras de datas

Diferença entre datas

Calcule a distância exata entre duas datas em anos, meses, semanas e dias.

Abrir ferramenta
Calculadoras de datas

Dias até uma data

Calcule quantos dias faltam para uma data futura ou se passaram desde então.

Abrir ferramenta
Calculadoras de datasDestaque

Calculadora de idade

Calcule sua idade exata em anos, meses, dias e horas de vida.

Abrir ferramenta

Perguntas frequentes

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.