September 1221
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Date guide
Thursday, September 16, 1221
Thursday, September 16, 1221 falls on a Thursday. It is day 259 of 365 and sits in ISO week 37.
Thursday16
September 1221
293,996 days ago (UTC)Day of year259 of 365
ISO week37
QuarterQ3
Days left in year106
Leap yearNo
ISO date1221-09-16
September 16 written four ways
09/16/1221 means September 16, 1221 in U.S. month-first notation. The same date is 16/09/1221 in day-first notation.
- ISO 8601
- 1221-09-16
- US numeric
- 09/16/1221
- International
- 16/09/1221
- Long form
- Thursday, September 16, 1221
No national holiday listed
Calendar Forge does not list a US or Canadian national holiday on this date. Regional holidays and informal observances may still apply.
Holiday calendars cover planning years 1971 through 2100.
In context
September 1221 calendar
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Printable daily planner
Thursday · Week 37Plan Sep 16, 1221
Schedule
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