September

E60409

September is the ninth month of the year in the Gregorian calendar, marking the transition from summer to autumn in the Northern Hemisphere and from winter to spring in the Southern Hemisphere.

Aliases (1)

Statements (48)
Predicate Object
instanceOf calendar month
month
associatedZodiacSign Libra
Virgo
containsEvent September equinox
start of meteorological autumn in Northern Hemisphere
start of meteorological spring in Southern Hemisphere
etymology Latin word "septem" meaning "seven"
follows August
hasAbbreviation Sep
Sep.
Sept
Sept.
hasBirthFlower aster
morning glory
hasBirthstone sapphire
hasCulturalAssociation beginning of academic year in many Northern Hemisphere countries
transition from summer to autumn in Northern Hemisphere
transition from winter to spring in Southern Hemisphere
hasDayCountRangeInYear days 244–273 in common year
days 245–274 in leap year
hasISO8601MonthCode 09
hasNotableHoliday Constitution Day of Mexico
Independence Day of Brazil
Independence Day of Mexico
Labor Day in the United States
Mid-Autumn Festival in some years
hasNumberOfDays 30
isInHalf second half of calendar year
isInQuarter third quarter of calendar year
isInSeasonNorthernHemisphere autumn
summer
isInSeasonSouthernHemisphere spring
winter
isNinthMonthIn common year
leap year
isObservedFor back-to-school period in many countries
harvest season in many temperate regions
partOf Gregorian calendar
Julian calendar
positionInYear 9
precedes October
typicalEquinoxDateRange September 22–24
typicalSeasonNorthernHemisphereEnd early autumn
typicalSeasonNorthernHemisphereStart late summer
typicalSeasonSouthernHemisphereEnd early spring
typicalSeasonSouthernHemisphereStart late winter
wasSeventhMonthIn Roman calendar

Referenced by (3)
Subject (surface form when different) Predicate
September ("September equinox")
containsEvent
Linus
hasNameDayInSomeCountries
St Giles’ Fair
heldInMonth

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