• Time Zone: GMT-05:00
• Time Zone ID: America/New_York
• Day numbers: 243
• Week number: 35
• Leap year: 2025 is not a leap year
• Daylight Saving Time: Yes
Sunrise, Sunset Times for Aug 31st 2025
• Sunrise time: 06:59 am
• Sunset time: 08:08 pm
• Day length: 13h 09m
• Source: suntoday.org
Moon Phase for Aug 31st 2025
• Moon Phase: First Quarter - 02:25 am
• Illumination: 56%
• Moon Age: 8.01 day(s)
• Source: mooninfo.org
Holidays and National Days for August 31st 2025
August 31 in History
1756
The British at Fort William Henry, New York, surrender to Louis Montcalm of France.
1802
Captain Meriwether Lewis leaves Pittsburgh to meet up with Captain William Clark and begin their trek to the Pacific Ocean.
1864
At the Democratic convention in Chicago, General George B. McClellan is nominated for president.
1919
The Communist Labor Party is founded in Chicago, with the motto, “Workers of the world unite!”
→ See more: August 31 in History
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