How long is the sunshine in Tianjin from winter solstice to summer solstice?

The sunshine duration of Tianjin 20 17 winter solstice is 9 hours and 25 minutes 18 seconds, and that of Tianjin summer solstice is 14 hours and 55 minutes and 8 seconds. The winter solstice is the longest night and the shortest sunshine time in a year. The solstice in winter is the natural transformation of yin and yang.

There are 24 hours in a day, and the sunshine time from summer to morning is 18 hours, so the sunshine time accounts for 18 ÷ 24 = 3/4, and the winter solstice accounts for 9 ÷18 =12 of the summer solstice, so the sunshine time accounts for 3/2 of the whole day.

The average frost-free period in Tianjin is 196~246 days, the longest frost-free period is 267 days, and the shortest frost-free period is 17 1 day. Among the four seasons, winter is the longest, 156~ 167 days; Summer comes next, 87~ 103 days; 56~6 1 day in spring; Autumn is the shortest, only 50~56 days. The average annual precipitation in Tianjin is 520 ~ 660mm, and the number of precipitation days is 63~70 days. In terms of regional distribution, there are more mountains than plains, and more coastal areas than inland areas.