Dark Time for 40°N-75°W (nominally Philadelphia, PA)

 Full Moon: February 09, 2020, 02:33 EST
  New Moon: February 23, 2020, 10:32 EST

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Eastern Std Time    Sun      PM Astro   Moon     AM Astro    Dark
                    Set      Twilight   Set      Twilight    Time
Night of...         h  m      h  m      h  m      h  m       h  m
-----------------   -----     -----     -----     -----     -----
2019 Feb 02 (Sun)   17:20     18:53     01:49     05:34      3:45
2019 Feb 03 (Mon)   17:21     18:54     02:52     05:34      2:42

2019 Feb 04 (Tue)   17:22     18:55     03:55     05:33      1:38
2019 Feb 05 (Wed)   17:23     18:56     04:56     05:32      0:36

2019 Feb 06 (Thu)   17:25     18:57     05:54     05:31      -:--
2019 Feb 07 (Fri)   17:26     18:58     06:45     05:30      -:--

                                      Moon Rise
                                      ---------
2019 Feb 08 (Sat)   17:27     18:59     16:47     05:29      -:--
2019 Feb 09 (Sun)   17:28     19:00     18:02     05:28      -:-- 

2019 Feb 10 (Mon)   17:29     19:01     19:18     05:27      0:17
2019 Feb 11 (Tue)   17:31     19:02     20:33     05:26      1:31

2020 Feb 12 (Wed)   17:32     19:03     21:46     05:25      2:43
2020 Feb 13 (Thu)   17:33     19:04     22:58     05:24      3:54

2020 Feb 14 (Fri)   17:34     19:05     00:09     05:23      5:04
2020 Feb 15 (Sat)   17:35     19:06     01:08     05:21      6:02
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Data generated with the U.S. Naval Observatory's MICA 2.2.2 software.

Note: Dark time is calculated as the period between evening and morning twilight when
there's no moon in the sky (the moon's phase is not considered).

The days listed are for the "night of" beginning on the listed date, e.g., Feb 02 (Sun)
is the night of Feb 02/03 (Sun/Mon). Moonrise or Moonset after midnigtht, or AM Astro
Twilight, is for the subsequent morning (e.g., Monday morning for Sunday night).