Today
Friday September 18 2026
- Day of the year
- 261/ 365
- Week
- 382,026
- Days left
- 10472%
- Moon
- 48%First quarter
Today is Friday, September 18, 2026. It is day 261 of 2026, a year of 365 days: 104 remain, and 72% of the year has gone. Under ISO 8601 this date falls in week 38.
What's celebrated on this date
No United Nations international day falls on this date.
Coming up
- September 21International Day of Peace
- September 26International Day for the Total Elimination of Nuclear Weapons
- September 27World Tourism Day
Saints and name days
Saints whose feast falls on this date, most widely known first.
- HrotsvithaGerman secular canoness, dramatist, and poet
- Joseph of CupertinoItalian conventual franciscan friar
- Lambert of Maastrichtbishop of Maastricht (635-705)
- RichardisHoly Roman Empress from 881 to 888, Catholic saint
- María de la Purísima de la CruzSpanish religious (1926-1998)
Sources : Wikidata (P841) · CC0 1.0
Astronomy
New York
- Sunrise
- 06:40
- Sunset
- 19:00
- Length of day
- 12h 20m−3 min vs yesterday
- Solar noon
- 12:50
Times shown for America/New_York
Season
Summer
began on June 21, 2026
Next season
Autumn — 4 days, September 22, 2026 (September equinox)
Public holidays — United States
Not a public holiday in the United States.
Next public holiday : Columbus Day — October 12, 2026
National holidays only. Regions, provinces and Länder add their own.
Moon
First quarter
Illumination : 48%
Moon age : 7.5 days
- Next full moon
- September 26, 2026
- Next new moon
- October 10, 2026
Astrology
Today's zodiac sign
Virgo
until September 23, 2026 — Libra
Zodiac dates are an astrological convention, not the Sun's actual position among the constellations. The astronomy above is measured; this is not.
On this day in history
96
Emperor Domitian is assassinated as a result of a plot by his wife Domitia and two Praetorian prefects. Nerva is then proclaimed as his successor. Wikipedia
324
Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire. Wikipedia
1180
Philip Augustus becomes king of France at the age of fifteen. Wikipedia
1454
Thirteen Years' War: In the Battle of Chojnice, the Polish army is defeated by the Teutonic knights. Wikipedia
1739
The Treaty of Belgrade is signed, whereby Austria cedes lands south of the Sava and Danube rivers to the Ottoman Empire. Wikipedia
1851
First publication of The New-York Daily Times, which later becomes The New York Times. Wikipedia
Show more (4)
1931
Imperial Japan instigates the Mukden incident as a pretext to invade and occupy Manchuria. Wikipedia
1934
The Soviet Union is admitted to the League of Nations. Wikipedia
1973
The Bahamas, East Germany and West Germany are admitted to the United Nations. Wikipedia
2014
Scotland votes against independence from the United Kingdom, by 55% to 45%. Wikipedia
Sources : Wikipedia (en) · CC BY-SA 4.0 · Data imported on 2026-08-26
Births and deaths
Born on this day September 18
- 1752Adrien-Marie Legendre, French mathematician and theorist (died 1833)
- 1765Pope Gregory XVI (died 1846)
- 1786Christian VIII of Denmark (died 1848)
- 1819Léon Foucault, French physicist and academic (died 1868)
- 1895John Diefenbaker, Canadian lawyer and politician, 13th Prime Minister of Canada (died 1979)
- 1905Greta Garbo, Swedish-American actress (died 1990)
- 1908Victor Ambartsumian, Georgian-Armenian astrophysicist, astronomer, and academic (died 1996)
- 1920Jack Warden, American actor (died 2006)
Died on this day September 18
- 1180Louis VII, king of France (born 1120)aged 60 years
- 1783Leonhard Euler, Swiss mathematician and physicist (born 1707)aged 76 years
- 1872Charles XV of Sweden (born 1826)aged 46 years
- 1961Dag Hammarskjöld, Swedish economist and diplomat, 2nd Secretary-General of the United Nations, Nobel Prize laureate (born 1905)aged 56 years
- 1967John Cockcroft, English physicist and academic, Nobel Prize laureate (born 1897)aged 70 years
- 1970Jimi Hendrix, American singer-songwriter, guitarist, and producer (born 1942)aged 28 years
- 1987Américo Tomás, Portuguese admiral and politician, 14th President of Portugal (born 1894)aged 93 years
- 2020Ruth Bader Ginsburg, United States Supreme Court justice (born 1933)aged 87 years
Sources : Wikipedia (en) · CC BY-SA 4.0 · Data imported on 2026-08-26
The day in words
In New York the sun rises at 06:40 and sets at 19:00, giving 12h 20m of daylight — 3 minutes less than yesterday. It has been summer since June 21, 2026; autumn opens in 4 days, on September 22, 2026 (September equinox).
The moon is at first quarter, 48% illuminated. The next full moon falls on September 26, 2026 and the next new moon on October 10, 2026.
The saints' calendar attaches September 18 to Hrotsvitha, Joseph of Cupertino and Lambert of Maastricht.
No United Nations international day falls on September 18. The next one on the calendar is International Day of Peace, on September 21.
It is not a public holiday in the United States.
On this day in history: Emperor Domitian is assassinated as a result of a plot by his wife Domitia and two Praetorian prefects (96); Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire (324). English Wikipedia records 10 events for this date.
Adrien-Marie Legendre was born on September 18, 1752; Louis VII died on September 18, 1180.
98 days remain until Christmas and 105 until New Year's Day.
In astrology — kept separate from the measured astronomy above, deliberately — September 18 falls under the sign of Virgo.
Calendar
By the numbers
- 72%
- of the year elapsed
- 98
- until Christmas
- 105
- until New Year
- 529
- until the next 29 February
2026 — Common year (365 days)
Work with dates
Sources
Every block on this page names where its data comes from. Nothing here is generated when the source is silent.
- United Nations — International Days— What's celebrated today
- Wikidata (P841)— Saints and name days · CC0 1.0
- Wikipedia (en)— On this day in history · CC BY-SA 4.0 · Data imported on 2026-08-26