Moon on September 21, 2026
This shows the Moon phase on “September 21” for the selected year — by default the nearest upcoming one. Pick another year with the selector above the timer and the phase updates: the ~29.5-day lunar cycle shifts it slightly from year to year.
This timer will help you find out exactly how much time is left before the onset of September 21, with an accuracy of one second.
Perhaps September 21 is the date of your birthday, anniversary, trip start, or just a day you're looking forward to. Our timer will brighten up your waiting time.
Use full-screen mode to display the countdown more clearly. This feature is useful for displaying on the monitor while preparing for your event.
Works for free and is available on any device
Use the year selector at the top of the timer to jump to any upcoming year and see exactly how many days, hours, minutes and seconds are left until September 21, along with the day of the week it falls on. The table below shows which weekday September 21 lands on in the coming years.
| Year | Day of the week |
|---|---|
| 2026 | Monday |
| 2027 | Tuesday |
| 2028 | Thursday |
| 2029 | Friday |
| 2030 | Saturday |
| 2031 | Sunday |
| 2032 | Tuesday |
| 2033 | Wednesday |
| 2034 | Thursday |
| 2035 | Friday |
| 2036 | Sunday |
