Question: When is the day as long as the night?
Answer: equinox
Disambiguated annotations:
qaPairs: question: When is the vernal equinox in the northern hemisphere?
answer: around 20 March
question: When is the autumnal equinox in the northern hemisphere?
answer: around 23 September
question: What is the term used to describe when the Earth's day is the same length as the night?
answer: equinox
question: When is the vernal equinox in the southern hemisphere?
answer: 23 September
question: When is the autumnal equinox in the southern hemisphere?
answer: 20 March
qaPairs: question: When is the day as long as the night the first time of the year in the northern hemisphere?
answer: northward equinox
vernal equinox
March equinox
spring equinox
question: When is the day as long as the night the first time of the year in the southern hemisphere?
answer: northward equinox
March equinox
autumnal equinox
question: When is the day as long as the night the second time of the year in the northern hemisphere?
answer: September equinox
Southward equinox
autumnal equinox
question: When is the day as long as the night the second time of the year in the southern hemisphere?
answer: September equinox
Southward equinox
spring equinox
question: What date is the day as long as the night the first time each year?
answer: March 20
question: What date is the day as long as the night the second time each year?
answer: between September 21 and 24