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Day of Week Calculator

Weekday number (0 = Sunday) and English name for a civil date.

Number
Name

About this calculator

Use this calculator to get the weekday of a calendar date. Enter a date as YYYY-MM-DD.

28 August 2026 is a Friday (5). Numbering is 0 = Sunday through 6 = Saturday. The calendar is Gregorian at UTC noon, so there is no timezone shift. The name output is always the English weekday; it is not translated.

Date: Calendar date.

Number: 0–6 weekday index.

Name: English weekday name.