Where are the equinoxes on the Celestial sphere and how long are the daylight and night periods
There is a fall equinox and a spring equinox The day on the calendar when daylight is longest and day and night are equal
The equinoxes are located on the Celestial sphere where the ecliptic intersects with the celestial equator. There are two equinoxes, the vernal (spring) equinox and the autumnal (fall) equinox, occurring approximately on March 20-21 and September 22-23 respectively each year.
At the equinoxes, the length of daylight and nighttime is almost equal all around the world, with both being approximately 12 hours long each. However, the exact duration of the daylight and nighttime periods depends on a few factors such as the observer’s latitude, the time of year, and the local weather conditions.
Moreover, it is important to note that the duration of daylight and nighttime varies as you move closer to the poles. In the polar regions, during the equinoxes, the Sun appears to move sideways along the horizon instead of rising and setting, leading to a period of days with prolonged twilight.
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