What day of the week is September 21?

September 21, 2026 falls on a

Monday

next occurrence: September 21, 2026

September 21 by year — the weekday shifts one day per year, two after a leap day:

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September 21, 2026 falls on a Monday.

How many days until September 21?

There are 63 days until September 21, 2026.

September 21, 2026 is a Monday, which is not a weekend day.