Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 28.  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)
 11/29/2023   08:00:01   ( -69.91,-123.87) 11/29/2023   08:00:29  ( -69.93,-123.88)    1.23                28
 11/29/2023   08:50:45   (  69.80,  43.60) 11/29/2023   08:49:56  (  69.82,  43.62)    2.33                49
 12/01/2023   23:26:16   (  70.02,-175.59) 12/01/2023   23:27:27  (  69.99,-175.53)    4.15                71
 12/02/2023   00:16:57   ( -69.87,  -8.04) 12/02/2023   00:16:57  ( -69.88,  -8.06)    1.11                 0
 12/02/2023   01:07:38   (  69.60, 159.66) 12/02/2023   01:06:26  (  69.66, 159.29)   15.89                72
 12/04/2023   15:43:11   (  69.94, -59.70) 12/04/2023   15:43:54  (  69.95, -59.69)    1.24                43
 12/04/2023   16:33:53   ( -69.84, 107.77) 12/04/2023   16:33:24  ( -69.84, 107.79)    0.75                29
 12/07/2023   07:09:35   ( -70.66,-112.37) 12/07/2023   07:10:43  ( -70.59,-110.53)   68.38                68
 12/07/2023   08:00:07   (  69.93,  56.09) 12/07/2023   08:00:20  (  69.93,  56.16)    2.84                13
 12/07/2023   08:50:48   ( -69.77,-136.36) 12/07/2023   08:49:51  ( -69.76,-136.43)    2.69                57
 12/09/2023   23:26:17   ( -69.98,   4.48) 12/09/2023   23:27:18  ( -69.97,   4.48)    0.29                61
 12/10/2023   00:17:01   (  69.87, 171.94) 12/10/2023   00:16:45  (  69.86, 171.96)    2.25                16
 12/10/2023   01:07:33   ( -69.24, -19.82) 12/10/2023   01:06:23  ( -69.31, -21.14)   52.43                70