English > September: 1 sense > noun 1, time| Meaning | The month following August and preceding October. |
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| Synonyms | Sep, Sept |
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| Part of | Gregorian calendar, New Style calendar | The solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years |
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| Parts | 9/11, 9-11, September 11, Sept. 11, Sep 11 | The day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs |
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| American Indian Day | (US) the 4th Friday in September |
| Citizenship Day, September 17 | celebrated in the United States |
| Labor Day | First Monday in September in the United States and Canada |
| Michaelmas, Michaelmas Day, September 29 | honoring the archangel Michael |
| autumnal equinox, September equinox, fall equinox | September 22 |
| mid-September | The middle part of September |
| Broader | Gregorian calendar month | A month in the Gregorian calendar |
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| Spanish | septiembre, setiembre |
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| Catalan | setembre |
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