Today
Tuesday August 18 2026
- Day of the year
- 230/ 365
- Week
- 342,026
- Days left
- 13563%
- Moon
- 36%Waxing crescent
Today is Tuesday, August 18, 2026. It is day 230 of 2026, a year of 365 days: 135 remain, and 63% of the year has gone. Under ISO 8601 this date falls in week 34.
What's celebrated on this date
No United Nations international day falls on this date.
Coming up
- August 19World Humanitarian Day
- August 21International Day of Remembrance of and Tribute to the Victims of Terrorism
- August 23International Day for the Remembrance of the Slave Trade and its Abolition
Saints and name days
Saints whose feast falls on this date, most widely known first.
- Sixtus IIIPope and bishop of Rome from 432 to 440
- Helena Augustasaint, first wife of Roman emperor Constantius Chlorus, and mother of Emperor Constantine the Great (250-330)
- John of RilaBulgarian hermit (876–946)
- Alberto HurtadoChilean Jesuit saint (1901-1952)
- Agapitus of Palestrina16 year old Christian Saint martyred in 274
Sources : Wikidata (P841) · CC0 1.0
Astronomy
New York
- Sunrise
- 06:10
- Sunset
- 19:50
- Length of day
- 13h 40m−2 min vs yesterday
- Solar noon
- 13:00
Times shown for America/New_York
Season
Summer
began on June 21, 2026
Next season
Autumn — 35 days, September 22, 2026 (September equinox)
Public holidays — United States
Not a public holiday in the United States.
Next public holiday : Labor Day — September 7, 2026
National holidays only. Regions, provinces and Länder add their own.
Moon
Waxing crescent
Illumination : 36%
Moon age : 5.9 days
- Next full moon
- August 28, 2026
- Next new moon
- September 11, 2026
Astrology
Today's zodiac sign
Leo
until August 23, 2026 — Virgo
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
1304
The Battle of Mons-en-Pévèle is fought to a draw between the French army and the Flemish militias. Wikipedia
1572
The Huguenot King Henry III of Navarre marries the Catholic Margaret of Valois, ostensibly to reconcile the feuding Protestants and Catholics of France. Wikipedia
1634
Father Urbain Grandier, accused and convicted of sorcery, is burned alive in Loudun, France. Wikipedia
1868
French astronomer Pierre Janssen discovers helium. Wikipedia
1870
Franco-Prussian War: Battle of Gravelotte is fought. Wikipedia
1877
American astronomer Asaph Hall discovers Phobos, one of Mars's moons. Wikipedia
Show more (4)
1903
German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers. Wikipedia
1920
The Nineteenth Amendment to the United States Constitution is ratified, guaranteeing women's suffrage. Wikipedia
1933
The Volksempfänger is first presented to the German public at a radio exhibition; the presiding Nazi Minister of Propaganda, Joseph Goebbels, delivers an accompanying speech heralding the radio as the 'eighth great power'. Wikipedia
1940
World War II: The Hardest Day air battle, part of the Battle of Britain, takes place. At that point, it is the largest aerial engagement in history with heavy losses sustained on both sides. Wikipedia
Sources : Wikipedia (en) · CC BY-SA 4.0 · Data imported on 2026-08-26
Births and deaths
Born on this day August 18
- 1692Louis Henri, Duke of Bourbon (died 1740)
- 1750Antonio Salieri, Italian composer and conductor (died 1825)
- 1792John Russell, 1st Earl Russell, English politician, Prime Minister of the United Kingdom (died 1878)
- 1830Franz Joseph I, Emperor of Austria from 1848-1916 (died 1916)
- 1908Edgar Faure, French historian and politician, 139th Prime Minister of France (died 1988)
- 1917Caspar Weinberger, American captain, lawyer, and politician, 15th United States Secretary of Defense (died 2006)
- 1932Luc Montagnier, French virologist and academic, Nobel Prize laureate (died 2022)
- 1962Felipe Calderón, Mexican lawyer and politician, 56th President of Mexicoturns 64 years
Died on this day August 18
- 1276Pope Adrian V (born 1220)aged 71 years
- 1503Pope Alexander VI (born 1431)aged 72 years
- 1559Pope Paul IV (born 1476)aged 83 years
- 1563Étienne de La Boétie, French judge and philosopher (born 1530)aged 33 years
- 1850Honoré de Balzac, French novelist and playwright (born 1799)aged 51 years
- 2004Elmer Bernstein, American composer and conductor (born 1922)aged 82 years
- 2009Kim Dae-jung, South Korean lieutenant and politician, 15th President of South Korea, Nobel Prize laureate (born 1925)aged 85 years
- 2018Kofi Annan, Ghanaian diplomat and seventh Secretary-General of the United Nations (born 1938)aged 80 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 06:10 and sets at 19:50, giving 13h 40m of daylight — 2 minutes less than yesterday. It has been summer since June 21, 2026; autumn opens in 35 days, on September 22, 2026 (September equinox).
The moon is a waxing crescent, 36% illuminated. The next full moon falls on August 28, 2026 and the next new moon on September 11, 2026.
The saints' calendar attaches August 18 to Sixtus III, Helena Augusta and John of Rila.
No United Nations international day falls on August 18. The next one on the calendar is World Humanitarian Day, on August 19.
It is not a public holiday in the United States.
On this day in history: The Battle of Mons-en-Pévèle is fought to a draw between the French army and the Flemish militias (1304); The Huguenot King Henry III of Navarre marries the Catholic Margaret of Valois, ostensibly to reconcile the feuding Protestants and Catholics of France (1572). English Wikipedia records 10 events for this date.
Louis Henri was born on August 18, 1692; Pope Adrian V died on August 18, 1276.
129 days remain until Christmas and 136 until New Year's Day.
In astrology — kept separate from the measured astronomy above, deliberately — August 18 falls under the sign of Leo.
Calendar
By the numbers
- 63%
- of the year elapsed
- 129
- until Christmas
- 136
- until New Year
- 560
- 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