Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 22.  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)
 11/23/2023   23:26:17   ( -70.40,   3.85) 11/23/2023   23:27:27  ( -70.29,   4.88)   40.16                70
 11/24/2023   00:16:53   (  69.87, 171.98) 11/24/2023   00:17:00  (  69.86, 171.91)    2.83                 7
 11/24/2023   01:07:35   ( -69.77, -20.56) 11/24/2023   01:06:30  ( -69.75, -20.61)    3.32                65
 11/26/2023   15:43:06   ( -69.95, 120.31) 11/26/2023   15:44:02  ( -69.97, 120.30)    2.07                56
 11/26/2023   16:33:50   (  69.84, -72.22) 11/26/2023   16:33:29  (  69.86, -72.21)    2.23                21
 11/26/2023   17:24:18   ( -69.05,  96.23) 11/26/2023   17:23:10  ( -69.09,  94.39)   73.23                68
 11/29/2023   08:00:02   ( -69.93,-123.90) 11/29/2023   08:00:30  ( -69.94,-123.85)    2.35                28
 11/29/2023   08:50:46   (  69.82,  43.57) 11/29/2023   08:49:57  (  69.83,  43.64)    2.88                49
 12/01/2023   23:26:17   (  70.02,-175.59) 12/01/2023   23:27:29  (  70.00,-175.53)    3.83                72
 12/02/2023   00:16:58   ( -69.86,  -8.04) 12/02/2023   00:16:59  ( -69.89,  -8.04)    3.17                 1
 12/02/2023   01:07:40   (  69.66, 159.58) 12/02/2023   01:06:27  (  69.72, 159.37)   11.18                73
 12/04/2023   15:43:13   (  69.97, -59.75) 12/04/2023   15:43:57  (  69.97, -59.68)    2.51                44
 12/04/2023   16:33:55   ( -69.86, 107.73) 12/04/2023   16:33:27  ( -69.87, 107.81)    2.96                28