Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 2 5.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 02/07/2023   15:18:43   ( -70.13, 126.60) 02/07/2023   15:19:31  ( -70.14, 126.68)    3.02                48
 02/07/2023   16:09:27   (  70.02, -65.91) 02/07/2023   16:08:59  (  69.99, -65.90)    3.28                28
 02/07/2023   16:59:51   ( -68.97, 102.90) 02/07/2023   16:58:45  ( -68.99, 100.40)   99.93                66
 02/10/2023   07:35:34   ( -70.05,-117.50) 02/10/2023   07:36:02  ( -70.06,-117.57)    2.82                28
 02/10/2023   08:26:18   (  69.94,  49.98) 02/10/2023   08:25:29  (  69.96,  49.93)    2.63                49
 02/12/2023   23:01:47   (  70.34,-169.48) 02/12/2023   23:02:58  (  70.28,-169.01)   18.70                71
 02/12/2023   23:52:25   ( -70.03,  -1.69) 02/12/2023   23:52:31  ( -70.01,  -1.76)    3.39                 6
 02/13/2023   00:43:09   (  69.92, 165.78) 02/13/2023   00:41:58  (  69.90, 165.73)    2.93                71
 02/15/2023   15:18:35   (  70.11, -53.36) 02/15/2023   15:19:30  (  70.10, -53.40)    2.41                55
 02/15/2023   16:09:17   ( -70.02, 114.10) 02/15/2023   16:09:00  ( -69.99, 114.09)    2.92                17
 02/15/2023   16:59:47   (  69.17, -77.35) 02/15/2023   16:58:39  (  69.22, -79.32)   77.77                68
 02/18/2023   07:35:27   (  70.11,  62.42) 02/18/2023   07:35:58  (  70.10,  62.50)    2.92                31
 02/18/2023   08:26:08   ( -69.96,-130.03) 02/18/2023   08:25:29  ( -69.95,-130.09)    2.54                39