Day 109 of 366 · ISO week 16 · Aries · Spring (Northern Hemisphere)
April 18 is the 109th day of the year in the Gregorian calendar; 257 days remain until the year's end. It falls in spring (northern hemisphere) and under the astrological sign of Aries.
Day of year
109
Days remaining
257
ISO week
16
Zodiac
Aries
Season
Spring
Sun declination
+10.9°
External references
Curated jump-off points to the major almanacs, encyclopaedias and primary sources for this date.
Solar declination through the year — the Sun's apparent latitude on Earth. April 18 ≈ +10.9°
Computed via Cooper's formula. Positive declination = Sun north of the celestial equator (Northern Hemisphere summer).
On April 18 the Sun's declination is approximately +10.9°. At this latitude the Sun is north of the celestial equator, giving the Northern Hemisphere longer days than nights.