Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2022 12 27.  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)
 12/28/2022   07:10:37   (  70.14,  68.75) 12/28/2022   07:11:09  (  70.12,  68.77)    1.52                32
 12/28/2022   08:01:18   ( -70.00,-123.72) 12/28/2022   08:00:39  ( -70.01,-123.76)    2.34                39
 12/30/2022   22:36:56   ( -70.66,  16.38) 12/30/2022   22:38:06  ( -70.54,  17.60)   46.89                70
 12/30/2022   23:27:31   (  70.07,-175.39) 12/30/2022   23:27:39  (  70.10,-175.39)    3.16                 8
 12/31/2022   00:18:13   ( -69.98,  -7.93) 12/31/2022   00:17:09  ( -69.99,  -7.91)    1.48                64
 01/02/2023   14:53:42   ( -70.18, 132.91) 01/02/2023   14:54:42  ( -70.17, 132.93)    1.70                60
 01/02/2023   15:44:26   (  70.07, -59.61) 01/02/2023   15:44:09  (  70.06, -59.58)    1.74                17
 01/02/2023   16:34:58   ( -69.45, 108.62) 01/02/2023   16:33:48  ( -69.46, 107.23)   54.23                70
 01/05/2023   07:10:35   ( -70.12,-111.25) 01/05/2023   07:11:11  ( -70.11,-111.27)    2.19                36
 01/05/2023   08:01:19   (  70.01,  56.23) 01/05/2023   08:00:38  (  69.99,  56.21)    2.54                41
 01/07/2023   22:36:55   (  70.60,-163.54) 01/07/2023   22:38:05  (  70.45,-162.52)   40.81                70
 01/07/2023   23:27:29   ( -70.08,   4.59) 01/07/2023   23:27:40  ( -70.08,   4.57)    1.03                11
 01/08/2023   00:18:13   (  69.97, 172.06) 01/08/2023   00:17:07  (  69.96, 172.05)    0.79                66