daylightcalculator.py

#!usr/bin/python

import time

print ("Is it dark outside?")

#month_number : sunset_hour

dark = {
	1: 16,
	2: 17,
	3: 18,
	4: 19,
	5: 19,
	6: 20,
	7: 20,
	8: 19,
	9: 18,
	10: 17,
	11: 16,
	12: 16,
}

#month_number : sunrise_hour
light = {
	1: 8,
	2: 7,
	3: 6, 
	4: 5,
	5: 4, 
	6: 4,
	7: 4, 
	8: 5,
	9: 6,
	10: 6,
	11: 7,
	12: 8

}


time_now = time.localtime()

if time_now.tm_hour >= dark[time_now.tm_mon] or time_now.tm_hour < light[time_now.tm_mon]:
	print("Yes")
else:
	print("No")