Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 10 30.  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)
 10/31/2023   00:16:24   ( -69.92,  -7.97) 10/31/2023   00:16:58  ( -69.93,  -7.98)    1.05                34
 10/31/2023   01:07:08   (  69.81, 159.52) 10/31/2023   01:06:25  (  69.83, 159.52)    2.62                43
 11/02/2023   15:42:44   (  70.15, -59.88) 11/02/2023   15:43:56  (  70.07, -59.53)   15.93                72
 11/02/2023   16:33:23   ( -69.90, 107.82) 11/02/2023   16:33:27  ( -69.91, 107.88)    2.55                 4
 11/02/2023   17:24:07   (  69.78, -84.69) 11/02/2023   17:22:54  (  69.80, -84.63)    3.39                73
 11/05/2023   07:59:38   (  69.93,  56.21) 11/05/2023   08:00:25  (  69.95,  56.19)    2.99                47
 11/05/2023   08:50:20   ( -69.83,-136.32) 11/05/2023   08:49:55  ( -69.85,-136.33)    2.34                25
 11/07/2023   23:26:07   ( -70.77,   3.34) 11/07/2023   23:27:14  ( -70.68,   5.48)   79.47                67
 11/08/2023   00:16:37   (  69.93, 171.97) 11/08/2023   00:16:53  (  69.90, 172.01)    3.08                16
 11/08/2023   01:07:19   ( -69.82, -20.56) 11/08/2023   01:06:23  ( -69.80, -20.50)    3.33                56
 11/10/2023   15:42:51   ( -69.99, 120.32) 11/10/2023   15:43:53  ( -69.99, 120.37)    1.85                62
 11/10/2023   16:33:35   (  69.89, -72.21) 11/10/2023   16:33:20  (  69.87, -72.15)    3.15                15
 11/10/2023   17:24:08   ( -69.30,  95.95) 11/10/2023   17:22:57  ( -69.38,  94.82)   45.28                71