Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 6 2.  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)
 06/03/2023   14:52:25   (  70.12, -47.07) 06/03/2023   14:53:36  (  70.12, -47.04)    1.11                71
 06/03/2023   15:43:06   ( -69.98, 120.45) 06/03/2023   15:43:06  ( -70.01, 120.43)    3.25                 0
 06/03/2023   16:33:48   (  69.76, -71.90) 06/03/2023   16:32:35  (  69.80, -72.22)   13.44                73
 06/06/2023   07:09:18   (  70.06,  68.78) 06/06/2023   07:10:08  (  70.05,  68.72)    3.11                50
 06/06/2023   08:00:00   ( -69.97,-123.77) 06/06/2023   07:59:37  ( -69.99,-123.72)    2.61                23
 06/08/2023   23:26:13   (  70.06,-175.45) 06/08/2023   23:26:39  (  70.05,-175.39)    2.29                26
 06/09/2023   00:16:54   ( -69.92,  -7.91) 06/09/2023   00:16:09  ( -69.95,  -7.91)    3.51                45
 06/11/2023   14:52:29   ( -70.44, 132.42) 06/11/2023   14:53:40  ( -70.32, 133.22)   32.86                71
 06/11/2023   15:43:07   (  70.02, -59.61) 06/11/2023   15:43:11  (  69.99, -59.61)    3.36                 4
 06/11/2023   16:33:48   ( -69.87, 107.93) 06/11/2023   16:32:41  ( -69.88, 107.88)    2.55                67
 06/14/2023   07:09:17   ( -70.08,-111.25) 06/14/2023   07:10:15  ( -70.07,-111.27)    2.21                58
 06/14/2023   08:00:01   (  69.98,  56.22) 06/14/2023   07:59:42  (  69.95,  56.22)    2.98                19