Explanation

What is Day of the Week?

This finds the weekday for a given calendar date.

What this calculator does

Find the day of the week for a date.

Inputs you need

• Date (YYYY-MM-DD)

Formula

Date is mapped to weekday using calendar date-time rules.

Example

For 2026-02-01:

• Day = Sunday

Quick input set you can try:

• Date (YYYY-MM-DD): 2026-02-01

FAQ

1) What does this calculator help with? It helps you calculate Day of the Week quickly and with consistent formulas.

2) Which formula is used? It uses the standard method shown in the formula section on this page.

3) Can I use decimal values? Yes. Decimal values are supported for most numeric fields.

4) Should I rely on this for final decisions? Use it as a practical estimate, and verify critical decisions with official documents or expert advice.