September is the first month of loss in the northern half of the world and the very first month of spring in the southerly half.

You are watching: How many days does september have


September’s birth flower is forget-me-not.

September is the ninth month in the Gregorian calendar and also has 30 days. It marks the start of the academic year in many countries—students go back to school from your summer break—and the start of the church year in the east Orthodox Church. The September Equinox usually drops on September 22 or 23 and is the begin of astronomical fall in the north Hemisphere.

Why Is September no the saturday Month?

The definition of September come from old Rome: Septem is Latin and way seven. The old roman calendar began in March, make September the saturday month. Once the roman inn senate changed the calendar in 153 BCE, the new year started in January, and also September ended up being the ninth month.

Important Holidays in September 2021

September 6, 2021: labor Day in the united States. In the US, labor Day is commemorated on the very first Monday that September. It ended up being a federal holiday in 1894 to add a vacation in the long gap between Independence job in July and also Thanksgiving in November. Many families use the lengthy weekend to take a critical summer trip.

September 21, 2021: Mid-Autumn Festival in China. Likewise known together Moon Festival, this is among the most necessary celebrations in the Chinese calendar, second only come the Chinese new Year. Almost everywhere China, human being make lanterns and enjoy moon cakes, exchange gifts, and also celebrate the complete Moon.

Astronomical occasions in September

September Equinox: Equinox—from Latin aequus “equal” and also nox “night”—is the time of year wherein night and day are virtually equally long. The September equinox wake up either top top September 22, 23, or 24. That marks the very first day that fall and also is referred to as autumnal (fall) equinox in the northern Hemisphere.

Harvest Moon: In numerous Native American cultures, September’s complete Moon is dubbed the complete Corn Moon or the Barley Moon. The names express to plants harvested in the early fall. This year, that is additionally the full Moon closest to the September equinox, making the 2021’s Harvest Moon.

See all occasions in the Cosmic Calendar


The Corn Moon is September’s complete Moon.

History of September

In the old roman calendar, September was called mens september, the saturday month, since the roman inn calendar began in March. September initially had actually 29 days.

In 154 BCE, a rebellion compelled the roman senate to adjust the start of the civil year from March come January 1st. With this reform, September officially came to be the nine month in the year 153 BCE.

In the year 46 BCE, Julius Caesar introduced a brand-new calendar system—the Julian calendar. He included ten days to the year and also introduced the leap day. In the brand-new Julian calendar, September to be expanded come 30 days.

See more: Every Real Number Is Every Real Number A Rational Number S Are Rational Numbers

September Birthstone and also Birth Flowers

According come tradition, the birthstone for September is the sapphire, representing clean thinking. Its birth flowers are the forget-me-not, morning glory, and also the aster.

Zodiac signs in September

Topics: Calendar, History, September, Months

AustraliaCanadaIndiaIrelandNew ZealandUnited KingdomUnited StatesAfghanistanAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntigua and also BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBosnia and HerzegovinaBotswanaBrazilBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral african RepublicChadChileChinaColombiaComorosCongo DRCook IslandsCosta RicaCroatiaCubaCuraçaoCyprusCzechiaDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGregorian calendarGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyIvory CoastJamaicaJapanJerseyJordanJulian calendarKazakhstanKenyaKiribatiKosovoKuwaitKyrgyzstanLa RéunionLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacauMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNew CaledoniaNew ZealandNicaraguaNigerNigeriaNorth KoreaNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPanamaPapua brand-new GuineaParaguayPeruPhilippinesPolandPortugalPuerto RicoQatarRepublic the the CongoRomaniaRussiaRwandaSaint BarthélemySaint HelenaSaint Kitts and also NevisSaint LuciaSaint MartinSaint Pierre and also MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSão Tomé and PríncipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint MaartenSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth KoreaSouth SudanSpainSri LankaSudanSurinameSwazilandSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandThe NetherlandsTimor-LesteTogoTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and also Caicos IslandsTuvaluU.S. Virgin IslandsUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVatican CityVenezuelaVietnamWallis and also FutunaYemenZambiaZimbabwe