Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 8 23.  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)
 08/25/2023   07:59:13   ( -70.03,-123.76) 08/25/2023   08:00:14  ( -70.02,-123.71)    2.54                61
 08/25/2023   08:49:57   (  69.91,  43.74) 08/25/2023   08:49:41  (  69.92,  43.79)    2.18                16
 08/25/2023   09:40:29   ( -69.30,-148.05) 08/25/2023   09:39:19  ( -69.37,-149.32)   50.58                70
 08/28/2023   00:16:09   ( -69.99,  -7.93) 08/28/2023   00:16:44  ( -69.98,  -7.87)    2.28                35
 08/28/2023   01:06:53   (  69.87, 159.56) 08/28/2023   01:06:11  (  69.88, 159.62)    2.45                42
 08/30/2023   15:42:29   (  70.36, -60.06) 08/30/2023   15:43:40  (  70.25, -59.24)   32.80                71
 08/30/2023   16:33:04   ( -69.90, 107.96) 08/30/2023   16:33:14  ( -69.92, 107.93)    2.85                10
 08/30/2023   17:23:49   (  69.83, -84.63) 08/30/2023   17:22:41  (  69.81, -84.58)    2.86                68
 09/02/2023   07:59:18   (  70.02,  56.24) 09/02/2023   08:00:12  (  70.00,  56.28)    2.67                54
 09/02/2023   08:49:59   ( -69.87,-136.23) 09/02/2023   08:49:42  ( -69.90,-136.23)    2.39                17
 09/02/2023   09:40:29   (  69.01,  32.32) 09/02/2023   09:39:22  (  69.06,  30.30)   80.44                67
 09/05/2023   00:16:13   (  69.95, 172.11) 09/05/2023   00:16:41  (  69.94, 172.09)    0.50                28
 09/05/2023   01:06:55   ( -69.85, -20.44) 09/05/2023   01:06:11  ( -69.84, -20.41)    1.52                44