Spring has finally sprung: The vernal equinox, the official start date for the season in the Northern Hemisphere, has arrived. The 2024 spring equinox occurred at exactly 11:06 p.m. EDT on Tuesday, March 19. But why does the day mark the start of spring and why only in the Northern ...
Who discovered the equinoxes? Additional resources Twice a year, day and night are about the same length in both the Southern and Northern Hemispheres. This phenomenon is called an equinox, which comes from the Latin words "aequus" (equal) and "nox" (night). What causes an equinox? The...
We greet the first day of the new season with the spring equinox, but what is it, exactly? And why does the first day of spring change? We explain.
In ancient times, this was one of the Celticcross-quarter days, which marked the midway points between the (four)solstices and equinoxesof the year. As with many early holidays, May Day was rooted in agriculture. Springtime festivities filled with song and dance celebrated the sown fields sta...
The 2024 winter solstice, the shortest day of the year, happens on Saturday, Dec. 21, in the Northern Hemisphere. The celestial event signifies the first day of winter, astronomically. What is the winter solstice? Thewinter solsticeis the day each year that has the shortest period of dayligh...
The first question:Are day and night actually equal on the days of the equinox? Answer:Day and night are not literally equal on the days of the autumnal equinox or the spring equinox, it depends on where you live. On the day of...
The equinoxes happen in March (about March 21) and September (about September 23).These are the days when the Sun is exactly above the Equator, which makes day and night of equal length. Encyclopædia Britannica, ...
Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. See full month's Sun Equinoxes & Solstices 2025 March equinox 3月20日 (四) 4時01分 June solstice 6月20日 (五) 21時42分 September equinox 9月22日 (一) 13時19分...
The vernal equinox arrives on Tuesday, marking the start of the spring season for the Northern Hemisphere.
First, let’s get into the equinox, which actually occurs just twice a year. The wordequinoxcomes from Latin and means “equality of night and day.” So, the equinox occurs at two specific moments in time when the sun is exactly above the equator (contrary to popular belief, the equinox...