Q. The equal length of day and night on September 23rd in all parts of the world is known as - (Solved)
1. Autumnal Equinox
2. Celestial Equinox
3. Winter Equinox
4. Vernal Equinox
- a. Autumnal Equinox
1. Autumnal Equinox
2. Celestial Equinox
3. Winter Equinox
4. Vernal Equinox