2. How many hours of day and night occur in new york on Dec 21? what about sydney and australia?

New York:

Hours of day: 9:15

Hours of night: 14:45

Sydney and Australia

Hours of day: 14:25

Hours of night: 9:35

Explanation:

For the Nothern hemisphere (New York) this is the winter solstice and it is the darkest day of the year. In the Southern hemisphere (Sydney and Australia) is the summer solstice and it is the longest day of the year.