WikiDay
HomeAll days › September 29

September 29

Day 273 of 366 · ISO week 39 · Libra · Autumn (Northern Hemisphere)

September 29 is the 273rd day of the year in the Gregorian calendar; 93 days remain until the year's end. It falls in autumn (northern hemisphere) and under the astrological sign of Libra.

Day of year
273
Days remaining
93
ISO week
39
Zodiac
Libra
Season
Autumn
Sun declination
-3.8°

External references

Curated jump-off points to the major almanacs, encyclopaedias and primary sources for this date.

Wikipedia: this day →Britannica: this day →LoC: Today in History →History.com: this day →On-This-Day.com →BBC: On This Day →NYT: this day →Time and Date →NASA APOD archive →U.S. Naval Observatory →Wolfram|Alpha →Wikidata →Google Books →JSTOR →Internet Archive →
— ad slot (replace with AdSense ins tag) —

Astronomy

Solar declination through the year — the Sun's apparent latitude on Earth. September 29 ≈ -3.8°
+23° −23° -3.8°
Computed via Cooper's formula. Positive declination = Sun north of the celestial equator (Northern Hemisphere summer).

On September 29 the Sun's declination is approximately -3.8°. At this latitude the Sun is south of the celestial equator, giving the Northern Hemisphere shorter days than nights.

For specific rise/set times at your location, see the U.S. Naval Observatory, or the NASA APOD archive for any imagery published on a September 29.

Position in the year

Position in the calendar year — day 273 of 366 (with 93 remaining)
JanFebMarAprMayJunJulAugSepOctNovDec Sep 29

Holidays & observances

No widely-observed holidays catalogued for this day in our base set. See the external almanacs above for region-specific observances.

Events

A selection of widely-documented historical events that took place on this date. Years marked BCE follow standard astronomical convention.

No events currently catalogued for this day. External references may have more.

Notable births

No births currently catalogued for this day. External references may have more.

Notable deaths

No deaths currently catalogued for this day. External references may have more.

Numerical & calendrical curiosities

Day-of-year (273)3 × 7 × 13 · composite (no)
Days remaining (93)3 × 31
Date code DDMMYYYY29092026 · no palindrome in next 200 years
Sun declination-3.82° (Cooper approximation)
Distance from solstice82 days

Cross-references

The 29th of every other month

Adjacent days

Days nearby

All days