Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2022 12 21.  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)
 12/22/2022   22:36:53   (  70.49,-163.31) 12/22/2022   22:38:04  (  70.37,-162.61)   28.79                71
 12/22/2022   23:27:29   ( -70.08,   4.64) 12/22/2022   23:27:37  ( -70.09,   4.62)    1.46                 8
 12/23/2022   00:18:13   (  69.96, 172.12) 12/23/2022   00:17:04  (  69.99, 172.11)    2.94                69
 12/25/2022   14:53:42   (  70.14, -47.02) 12/25/2022   14:54:34  (  70.14, -47.06)    1.45                52
 12/25/2022   15:44:24   ( -70.05, 120.44) 12/25/2022   15:44:04  ( -70.03, 120.42)    2.55                20
 12/25/2022   16:34:52   (  69.09, -70.85) 12/25/2022   16:33:45  (  69.15, -73.13)   90.61                67
 12/28/2022   07:10:37   (  70.13,  68.77) 12/28/2022   07:11:00  (  70.11,  68.79)    1.80                23
 12/28/2022   08:01:18   ( -69.98,-123.69) 12/28/2022   08:00:30  ( -70.00,-123.73)    2.91                48
 12/30/2022   22:36:47   ( -70.17,  17.15) 12/30/2022   22:37:59  ( -70.18,  17.13)    0.80                72
 12/30/2022   23:27:31   (  70.06,-175.37) 12/30/2022   23:27:26  (  70.06,-175.39)    0.75                 5
 12/31/2022   00:18:09   ( -69.81,  -7.67) 12/31/2022   00:16:57  ( -69.85,  -8.05)   15.17                72
 01/02/2023   14:53:40   ( -70.12, 133.00) 01/02/2023   14:54:24  ( -70.11, 132.93)    3.11                44
 01/02/2023   15:44:24   (  70.01, -59.52) 01/02/2023   15:43:51  (  69.99, -59.59)    3.65                33