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January 29

Day 29 of 366 · ISO week 5 · Aquarius · Winter (Northern Hemisphere)

January 29 is the 29th day of the year in the Gregorian calendar; 337 days remain until the year's end. It falls in winter (northern hemisphere) and under the astrological sign of Aquarius.

Day of year
29
Days remaining
337
ISO week
5
Zodiac
Aquarius
Season
Winter
Sun declination
-18.3°

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 →
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Astronomy

Solar declination through the year — the Sun's apparent latitude on Earth. January 29 ≈ -18.3°
0° +23° −23° -18.3°
Computed via Cooper's formula. Positive declination = Sun north of the celestial equator (Northern Hemisphere summer).

On January 29 the Sun's declination is approximately -18.3°. 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 January 29.

Position in the year

Position in the calendar year — day 29 of 366 (with 337 remaining)
JanFebMarAprMayJunJulAugSepOctNovDec Jan 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.

Notable births

Notable deaths

Numerical & calendrical curiosities

Day-of-year (29)29 · prime
Days remaining (337)337
Date code DDMMYYYY29012026 · no palindrome in next 200 years
Sun declination-18.29° (Cooper approximation)
Distance from solstice40 days

Cross-references

The 29th of every other month

February 29March 29April 29May 29June 29July 29August 29September 29October 29November 29December 29

Adjacent days

← January 28January 30 →

Days nearby

-30 days · December 30-7 days · January 22+7 days · February 5+30 days · February 28

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