How many days until September 21?
There are 30 days until September 21, 2026, which lands on a Monday. Watch it tick down live, and share the countdown with everyone who should be counting too.
Counting down to September 21
September 21 birthday facts
Born on September 21? That makes you a Virgo — thoughtful, precise and secretly the one holding it all together. Your birthstone is the sapphire, your birth flower is the aster, and your half-birthday lands on March 21 — worth celebrating too. See everything about being born in September, get the full picture with the birthday personality tool, or work out your exact age with the age calculator.
Famous birthdays on September 21
Anyone celebrating a September 21 birthday is in famous company — these are the best-known people born on this exact date:
- Stephen King (1947) — horror novelist
- Bill Murray (1950) — actor and comedian
- Leonard Cohen (1934) — singer-songwriter
- H.G. Wells (1866) — science fiction pioneer
September 21 is also International Day of Peace, so a birthday on this date shares the calendar with a celebration the whole world already knows.
What makes a September 21 birthday special
September 21 is the 264th day of the year, which means a September 21 birthday arrives with 101 days of the year still to go. It falls on the 30th day of Virgo season — thoughtful, precise and secretly the one holding it all together. More Americans are born in September than any other month; several dates in mid-September rank among the most common birthdays of all.
What day of the week is September 21?
| Year | September 21 falls on |
|---|---|
| 2026 | Monday |
| 2027 | Tuesday |
| 2028 | Thursday |
| 2029 | Friday |
| 2030 | Saturday |
Quick answers
- How many days until September 21?
- There are 30 days until September 21, 2026. It falls on a Monday.
- What zodiac sign is September 21?
- People born on September 21 are Virgo — typically thoughtful, precise and secretly the one holding it all together.
- What are the birthstone and birth flower for September 21?
- The September birthstone is Sapphire and the birth flower is the Aster.
- Which famous people were born on September 21?
- Famous September 21 birthdays include Stephen King, Bill Murray, Leonard Cohen, H.G. Wells.