Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 6 20.  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)
 06/20/2024   05:54:21   ( -70.99, -93.82) 06/20/2024   05:55:28  ( -70.93, -91.55)   82.81                67
 06/20/2024   06:44:51   (  70.13,  74.89) 06/20/2024   06:45:08  (  70.12,  74.90)    0.72                17
 06/20/2024   07:35:32   ( -70.00,-117.60) 06/20/2024   07:34:38  ( -70.00,-117.64)    1.44                54
 06/22/2024   22:11:03   ( -70.18,  23.26) 06/22/2024   22:12:05  ( -70.19,  23.25)    1.51                62
 06/22/2024   23:01:48   (  70.10,-169.31) 06/22/2024   23:01:32  (  70.09,-169.25)    2.41                16
 06/22/2024   23:52:20   ( -69.49,  -1.09) 06/22/2024   23:51:10  ( -69.53,  -2.39)   50.88                70
 06/25/2024   14:28:01   ( -70.15, 139.06) 06/25/2024   14:28:30  ( -70.14, 139.07)    1.77                29
 06/25/2024   15:18:45   (  70.03, -53.43) 06/25/2024   15:17:57  (  70.03, -53.44)    0.82                48
 06/28/2024   05:54:17   (  70.22,  87.40) 06/28/2024   05:55:24  (  70.23,  87.46)    2.19                67
 06/28/2024   06:44:58   ( -70.08,-105.06) 06/28/2024   06:44:54  ( -70.11,-105.07)    3.46                 4
 06/28/2024   07:35:37   (  69.69,  62.83) 06/28/2024   07:34:25  (  69.78,  62.11)   29.39                72
 06/30/2024   22:11:14   (  70.16,-156.74) 06/30/2024   22:11:48  (  70.18,-156.72)    1.76                34
 06/30/2024   23:01:56   ( -70.07,  10.72) 06/30/2024   23:01:18  ( -70.06,  10.75)    1.41                38
 07/03/2024   13:37:30   ( -70.43, 151.30) 07/03/2024   13:38:41  ( -70.38, 151.82)   20.42                71
 07/03/2024   14:28:10   (  70.11, -40.89) 07/03/2024   14:28:11  (  70.10, -40.93)    1.96                 1
 07/03/2024   15:18:52   ( -70.01, 126.58) 07/03/2024   15:17:41  ( -69.99, 126.55)    2.90                71