Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-20
TLE Epoch: 2022 12 6.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(NOAA-20) NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2022   01:57:38   (  70.46,  17.39) 12/17/2022   01:56:23  (  70.43,  17.58)    8.00                75
 12/17/2022   02:37:16   ( -67.54, -39.52) 12/17/2022   02:36:15  ( -67.54, -39.55)    1.32                61
 12/17/2022   03:27:21   (  65.35, 130.19) 12/17/2022   03:26:21  (  65.35, 130.18)    0.79                60
 12/17/2022   04:31:52   ( -62.27, 150.26) 12/17/2022   04:31:10  ( -62.25, 150.31)    3.17                42
 12/17/2022   05:25:43   (  51.12, -49.15) 12/17/2022   05:25:09  (  51.12, -49.15)    0.16                34
 12/17/2022   06:12:05   ( -65.44, 127.83) 12/17/2022   06:11:42  ( -65.44, 127.83)    0.44                23
 12/17/2022   07:02:05   (  67.47, -62.60) 12/17/2022   07:01:48  (  67.47, -62.62)    0.85                17
 12/17/2022   07:50:39   ( -73.67, 115.04) 12/17/2022   07:50:35  ( -73.69, 115.06)    2.39                 4
 12/17/2022   08:40:37   (  75.66, -72.22) 12/17/2022   08:40:38  (  75.66, -72.23)    0.33                 1
 12/17/2022   09:29:56   ( -78.73, 108.72) 12/17/2022   09:30:12  ( -78.71, 108.63)    2.90                16
 12/17/2022   10:21:13   (  77.22, -91.75) 12/17/2022   10:21:33  (  77.23, -91.80)    1.18                20
 12/17/2022   11:10:43   ( -79.56,  89.38) 12/17/2022   11:11:18  ( -79.55,  89.31)    1.91                35
 12/17/2022   12:01:52   (  78.52,-110.52) 12/17/2022   12:02:31  (  78.52,-110.59)    1.54                39
 12/17/2022   12:51:37   ( -80.06,  68.81) 12/17/2022   12:52:31  ( -80.06,  68.77)    0.95                54
 12/17/2022   13:42:37   (  79.45,-129.46) 12/17/2022   13:43:35  (  79.45,-129.54)    1.52                58
 12/17/2022   14:32:35   ( -80.40,  47.40) 12/17/2022   14:33:48  ( -80.40,  47.39)    0.01                73