Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 8 3.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 08/03/2023   23:25:48   ( -70.76,   3.53) 08/03/2023   23:26:56  ( -70.65,   5.47)   72.17                68
 08/04/2023   00:16:19   (  69.97, 172.09) 08/04/2023   00:16:34  (  69.95, 172.09)    2.04                15
 08/04/2023   01:07:00   ( -69.83, -20.38) 08/04/2023   01:06:04  ( -69.84, -20.43)    2.53                56
 08/06/2023   15:42:26   ( -70.03, 120.47) 08/06/2023   15:43:37  ( -70.02, 120.43)    1.88                71
 08/06/2023   16:33:10   (  69.92, -72.06) 08/06/2023   16:33:04  (  69.91, -72.08)    1.11                 6
 08/06/2023   17:23:49   ( -69.67,  95.63) 08/06/2023   17:22:36  ( -69.70,  95.25)   14.98                73
 08/09/2023   07:59:17   ( -69.99,-123.68) 08/09/2023   08:00:06  ( -70.02,-123.70)    3.37                49
 08/09/2023   08:50:01   (  69.88,  43.79) 08/09/2023   08:49:33  (  69.90,  43.79)    2.77                28
 08/12/2023   00:16:09   ( -70.00,  -7.93) 08/12/2023   00:16:35  ( -69.98,  -7.86)    3.51                26
 08/12/2023   01:06:52   (  69.85, 159.62) 08/12/2023   01:06:02  (  69.87, 159.63)    2.34                50
 08/14/2023   15:42:20   (  70.23, -59.81) 08/14/2023   15:43:30  (  70.18, -59.31)   19.63                70
 08/14/2023   16:32:58   ( -69.92, 107.98) 08/14/2023   16:33:03  ( -69.92, 107.95)    1.27                 5
 08/14/2023   17:23:42   (  69.82, -84.56) 08/14/2023   17:22:30  (  69.80, -84.57)    2.12                72