C:\Users\Fred\Desktop>perl astro5.pl
sun height is 0
At 45N 122.5W:
 In 2016:
  Spring begins on the March equinox at 2016-03-19 21:29:48 PDT.
   Sunrise is at 07:15:36 PDT, sunset is at 19:17:02 PDT,
   and the day is 12 hours, 1 minute, and 26 seconds long.
  Summer begins on the June solstice at 2016-06-20 15:33:55 PDT.
   Sunrise is at 05:27:45 PDT, sunset is at 20:53:24 PDT,
   and the day is 15 hours, 25 minutes, and 39 seconds long.
  Fall begins on the September equinox at 2016-09-22 07:20:41 PDT.
   Sunrise is at 07:02:13 PDT, sunset is at 18:58:39 PDT,
   and the day is 11 hours, 56 minutes, and 26 seconds long.
  Winter begins on the December solstice at 2016-12-21 02:44:00 PST.
   Sunrise is at 07:50:12 PST, sunset is at 16:24:55 PST,
   and the day is 8 hours, 34 minutes, and 43 seconds long.
sun height is -0.833
At 45N 122.5W:
 In 2016:
  Spring begins on the March equinox at 2016-03-19 21:29:48 PDT.
   Sunrise is at 07:10:53 PDT, sunset is at 19:21:45 PDT,
   and the day is 12 hours, 10 minutes, and 52 seconds long.
  Summer begins on the June solstice at 2016-06-20 15:33:55 PDT.
   Sunrise is at 05:22:01 PDT, sunset is at 20:59:08 PDT,
   and the day is 15 hours, 37 minutes, and 7 seconds long.
  Fall begins on the September equinox at 2016-09-22 07:20:41 PDT.
   Sunrise is at 06:57:30 PDT, sunset is at 19:03:21 PDT,
   and the day is 12 hours, 5 minutes, and 51 seconds long.
  Winter begins on the December solstice at 2016-12-21 02:44:00 PST.
   Sunrise is at 07:44:32 PST, sunset is at 16:30:35 PST,
   and the day is 8 hours, 46 minutes, and 3 seconds long.
sun height is -6
At 45N 122.5W:
 In 2016:
  Spring begins on the March equinox at 2016-03-19 21:29:48 PDT.
   Sunrise is at 06:41:38 PDT, sunset is at 19:51:05 PDT,
   and the day is 13 hours, 9 minutes, and 27 seconds long.
  Summer begins on the June solstice at 2016-06-20 15:33:55 PDT.
   Sunrise is at 04:44:34 PDT, sunset is at 21:36:35 PDT,
   and the day is 16 hours, 52 minutes, and 1 second long.
  Fall begins on the September equinox at 2016-09-22 07:20:41 PDT.
   Sunrise is at 06:28:12 PDT, sunset is at 19:32:35 PDT,
   and the day is 13 hours, 4 minutes, and 23 seconds long.
  Winter begins on the December solstice at 2016-12-21 02:44:00 PST.
   Sunrise is at 07:10:39 PST, sunset is at 17:04:27 PST,
   and the day is 9 hours, 53 minutes, and 48 seconds long.
sun height is -12
At 45N 122.5W:
 In 2016:
  Spring begins on the March equinox at 2016-03-19 21:29:48 PDT.
   Sunrise is at 06:07:16 PDT, sunset is at 20:25:33 PDT,
   and the day is 14 hours, 18 minutes, and 17 seconds long.
  Summer begins on the June solstice at 2016-06-20 15:33:55 PDT.
   Sunrise is at 03:54:46 PDT, sunset is at 22:26:23 PDT,
   and the day is 18 hours, 31 minutes, and 37 seconds long.
  Fall begins on the September equinox at 2016-09-22 07:20:41 PDT.
   Sunrise is at 05:53:49 PDT, sunset is at 20:06:52 PDT,
   and the day is 14 hours, 13 minutes, and 3 seconds long.
  Winter begins on the December solstice at 2016-12-21 02:44:00 PST.
   Sunrise is at 06:33:22 PST, sunset is at 17:41:44 PST,
   and the day is 11 hours, 8 minutes, and 22 seconds long.
sun height is -18
At 45N 122.5W:
 In 2016:
  Spring begins on the March equinox at 2016-03-19 21:29:48 PDT.
   Sunrise is at 05:32:02 PDT, sunset is at 21:00:56 PDT,
   and the day is 15 hours, 28 minutes, and 54 seconds long.
  Summer begins on the June solstice at 2016-06-20 15:33:55 PDT.
   Sunrise is at 02:48:34 PDT, sunset is at 23:32:32 PDT,
   and the day is 20 hours, 43 minutes, and 58 seconds long.
  Fall begins on the September equinox at 2016-09-22 07:20:41 PDT.
   Sunrise is at 05:18:36 PDT, sunset is at 20:41:56 PDT,
   and the day is 15 hours, 23 minutes, and 20 seconds long.
  Winter begins on the December solstice at 2016-12-21 02:44:00 PST.
   Sunrise is at 05:57:35 PST, sunset is at 18:17:31 PST,
   and the day is 12 hours, 19 minutes, and 56 seconds long.