387 days ago (1 year, 22 days ago)

Monday, September 1, 2025

Monday, September 1, 2025 is a Monday. It is day 244 of 2025 (66.8% through the year), ISO week 36, in Q3.

Calendar dial and astronomical representation
Audio Almanac Briefing

Listen to daily astrological metrics, calendar specifications, and historical highlights for Monday, September 1, 2025.

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Comprehensive Date Metrics for Monday, September 1, 2025

ISO 8601 & Astronomical
Day of Year 244 / 365 % of 2025 passed
Days Left in Year 121 days Remaining until Jan 1, 2026
ISO Week Number Week 36 Quarter Q3
Day Classification Weekday Monday
Roman Numeral Date I.IX.MMXXV Day.Month.Year
Julian Day Number (JDN) 2,460,919.5 Astronomical continuous count
Unix Epoch Timestamp 1756728000 Seconds since Jan 1, 1970 UTC
Moon Phase & Illumination First Quarter 62% illuminated
Astrological Zodiac Sign Virgo Sun Sign
Calendar Season Summer in the Northern Hemisphere, winter in the Southern Hemisphere Northern hemisphere season
Leap Year Status Common Year (365 days) February has 28 days
Time Elapsed / Countdown 387 days ago (1 year, 22 days ago) Relative to today

Holidays & Observances

September 1
Calendar Labor Day in the United States
Observance Feast of Creation (Christianity)
Observance Constantius (Costanzo) of Aquino
Observance David Pendleton Oakerhater (Anglican Communion)
Observance Giles
Observance Isabel Cristina
Observance Loup (Lupus) of Sens
Observance Nivard (Nivo)

Date Overview & Context

Calendar Overview

Monday, September 1, 2025 combines practical calendar facts with a wider view of the day: 2019: Hurricane Dorian, the most powerful Atlantic hurricane on record outside the tropics, made landfall in the Bahamas at Category 5 intensity.. Use it to check the date, plan across time zones, and scan the observances and historical markers attached to September 1.

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On This Day in History: September 1

10 Recorded Events

Hurricane Dorian, the most powerful Atlantic hurricane on record outside the tropics, made landfall in the Bahamas at Category 5 intensity.

Hurricane Dorian →

A Soviet jet interceptor shot down the civilian Korean Air Lines Flight 007 near the island of Sakhalin in the north Pacific, killing all 246 passengers and 23 crew on board.

Interceptor aircraft →

A 76-hour multinational rescue effort in the Irish Sea resulted in the deepest sub rescue in history (pictured).

Irish Sea →

In a match widely publicized as a Cold War confrontation, American chess grandmaster Bobby Fischer became the 11th World Chess Champion with his victory over Soviet Boris Spassky.

Cold War →

Muammar Gaddafi (pictured) led a coup d'état to overthrow King Idris of Libya.

Muammar Gaddafi →

At an Arab League summit, eight nations issued the Khartoum Resolution, declaring that there would be "no peace with Israel, no recognition of Israel, [and] no negotiations with it".

1967 Arab League summit →

Rioting erupted in Dayton, Ohio, resulting in one death and the mobilization of the Ohio National Guard.

1966 Dayton race riot →

Channel 11 began television broadcasts in Minneapolis, United States.

KARE (TV) →

Ernest Hemingway's novel The Old Man and the Sea, which later won the Pulitzer Prize for Fiction, was first published.

Ernest Hemingway →

Notable Memorials & Deaths

In Memoriam

Frequently Asked Questions about Monday, September 1, 2025

What day of the week was or is Monday, September 1, 2025?

Monday, September 1, 2025 falls on a Monday.

How many days ago or from now is Monday, September 1, 2025?

387 days ago (1 year, 22 days ago). It is day 244 of 2025 with 121 days remaining in the year.

What is the Roman numeral format for Monday, September 1, 2025?

In Roman numerals, Monday, September 1, 2025 is written as I.IX.MMXXV (Day.Month.Year format).

What was the moon phase and zodiac sign on Monday, September 1, 2025?

The moon phase for this date is First Quarter (approx. 62% illuminated). The astrological sun sign is Virgo.