Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 26.  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)
 11/26/2023   15:43:05   ( -69.94, 120.33) 11/26/2023   15:44:01  ( -69.96, 120.29)    2.75                56
 11/26/2023   16:33:50   (  69.88, -72.28) 11/26/2023   16:33:28  (  69.86, -72.21)    3.52                22
 11/26/2023   17:24:18   ( -69.04,  96.25) 11/26/2023   17:23:10  ( -69.08,  94.38)   74.19                68
 11/29/2023   08:00:02   ( -69.94,-123.91) 11/29/2023   08:00:29  ( -69.93,-123.87)    1.84                27
 11/29/2023   08:50:46   (  69.83,  43.56) 11/29/2023   08:49:56  (  69.82,  43.63)    2.55                50
 12/01/2023   23:26:16   (  70.00,-175.56) 12/01/2023   23:27:26  (  70.00,-175.51)    1.82                70
 12/02/2023   00:16:58   ( -69.90,  -8.09) 12/02/2023   00:16:56  ( -69.89,  -8.03)    2.44                 2
 12/02/2023   01:07:38   (  69.58, 159.69) 12/02/2023   01:06:25  (  69.67, 159.31)   17.73                73
 12/04/2023   15:43:10   (  69.93, -59.68) 12/04/2023   15:43:51  (  69.96, -59.68)    2.71                41
 12/04/2023   16:33:52   ( -69.83, 107.79) 12/04/2023   16:33:21  ( -69.85, 107.81)    2.36                31
 12/07/2023   07:09:32   ( -70.56,-112.20) 12/07/2023   07:10:41  ( -70.46,-110.69)   56.73                69
 12/07/2023   08:00:05   (  69.88,  56.17) 12/07/2023   08:00:16  (  69.91,  56.16)    3.36                11
 12/07/2023   08:50:47   ( -69.77,-136.36) 12/07/2023   08:49:46  ( -69.80,-136.36)    3.35                61
 12/09/2023   23:26:17   ( -69.99,   4.46) 12/09/2023   23:27:13  ( -69.97,   4.51)    2.71                56
 12/10/2023   00:17:00   (  69.84, 171.99) 12/10/2023   00:16:40  (  69.85, 171.99)    1.65                20