Free weekday calculator — find the day of the week for any date instantly.
Frequently looked-up dates — see what day of the week they fall on and how far away they are.
New Year's Day
Jan 1, 2026 — Thursday
Valentine's Day
Feb 14, 2026 — Saturday
Easter
Apr 5, 2026 — Sunday
Halloween
Oct 31, 2026 — Saturday
Thanksgiving
Nov 26, 2026 — Thursday
Christmas
Dec 25, 2026 — Friday
Passover
Apr 9, 2026 — Thursday
Ramadan
Feb 17, 2026 — Tuesday
Eid al-Fitr
Mar 19, 2026 — Thursday
Eid al-Adha
May 26, 2026 — Tuesday
Diwali
Nov 8, 2026 — Sunday
Chinese New Year
Hanukkah
Dec 4, 2026 — Friday
St. Patrick's Day
Mar 17, 2026 — Tuesday
Mother's Day
May 10, 2026 — Sunday
Father's Day
Jun 21, 2026 — Sunday
International Labour Day
May 1, 2026 — Friday
Independence Day (US)
Jul 4, 2026 — Saturday
Whatistheday is a free weekday calculator and multi-calendar date converter. Find the exact day of the week for any date — past, present, or future — with 100% mathematical accuracy.
Our engine uses the Proleptic Gregorian Calendar for modern and future dates and the Julian Calendar for dates before the Gregorian Reform of 1582. This dual-system approach ensures historically accurate weekday results for any era, making it ideal for academic research, genealogy, and religious calendar synchronization.
Whatistheday is completely free, requires no registration, and works on any device. All calculations are performed locally in your browser for instant results and total privacy.