On which two dates of the year are the day and night of equal length everywhere on Earth (Equinoxes)?

Options:

• A: 21 June and 22 December
• B: 21 March and 23 September
• C: 3 January and 4 July
• D: 15 April and 15 October

Related Practice Questions:

• Why is copper considered highly pure and extensively used in religious rituals by Hindus today according to the historical context of natural resources?
• Which of the following regions is described by R.S. Sharma as "the most coveted and contested area" fought over by important ruling powers in northern India?
• Paper currency was not used in ancient India. In which century was paper currency finally introduced to India?
• The earliest agricultural settlements and states in ancient northern India were founded along the Himalayan foothills (the "terai" route) during which period?