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May 30

Day 151 of 366 · ISO week 22 · Gemini · Spring (Northern Hemisphere)

May 30 is the 151st day of the year in the Gregorian calendar; 215 days remain until the year's end. It falls in spring (northern hemisphere) and under the astrological sign of Gemini.

Day of year
151
Days remaining
215
ISO week
22
Zodiac
Gemini
Season
Spring
Sun declination
+21.9°

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. May 30 ≈ +21.9°
+23° −23° +21.9°
Computed via Cooper's formula. Positive declination = Sun north of the celestial equator (Northern Hemisphere summer).

On May 30 the Sun's declination is approximately +21.9°. At this latitude the Sun is north of the celestial equator, giving the Northern Hemisphere longer 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 May 30.

Position in the year

Position in the calendar year — day 151 of 366 (with 215 remaining)
JanFebMarAprMayJunJulAugSepOctNovDec May 30

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 (151)151 · prime
Days remaining (215)5 × 43
Date code DDMMYYYY30052026 · no palindrome in next 200 years
Sun declination+21.89° (Cooper approximation)
Distance from solstice21 days

Cross-references

The 30th of every other month

Adjacent days

Days nearby

Themes: joan-of-arcindy-500tiananmen-goddess

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