Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 22.  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)
 05/22/2025   05:54:47   ( -70.87, -93.54) 05/22/2025   05:55:55  ( -70.77, -91.81)   64.28                68
 05/22/2025   06:45:20   (  70.16,  74.90) 05/22/2025   06:45:32  (  70.13,  74.89)    3.40                12
 05/22/2025   07:36:01   ( -70.03,-117.58) 05/22/2025   07:35:01  ( -70.06,-117.57)    3.41                60
 05/24/2025   22:11:31   ( -70.20,  23.29) 05/24/2025   22:12:32  ( -70.20,  23.23)    2.18                61
 05/24/2025   23:02:16   (  70.11,-169.27) 05/24/2025   23:01:59  (  70.10,-169.26)    1.64                17
 05/24/2025   23:52:47   ( -69.46,  -0.98) 05/24/2025   23:51:37  ( -69.54,  -2.40)   55.91                70
 05/27/2025   14:28:28   ( -70.16, 139.11) 05/27/2025   14:29:00  ( -70.16, 139.06)    1.98                32
 05/27/2025   15:19:13   (  70.08, -53.46) 05/27/2025   15:18:27  (  70.05, -53.45)    2.67                46
 05/30/2025   05:54:45   (  70.31,  87.32) 05/30/2025   05:55:57  (  70.26,  87.46)    7.27                72
 05/30/2025   06:45:25   ( -70.13,-105.09) 05/30/2025   06:45:27  ( -70.15,-105.07)    2.21                 2
 05/30/2025   07:36:08   (  69.94,  62.51) 05/30/2025   07:34:55  (  69.99,  62.34)    8.19                73
 06/01/2025   22:11:40   (  70.18,-156.72) 06/01/2025   22:12:25  (  70.18,-156.78)    2.51                45
 06/01/2025   23:02:22   ( -70.11,  10.71) 06/01/2025   23:01:54  ( -70.12,  10.77)    2.93                28
 06/04/2025   13:38:05   ( -70.97, 150.46) 06/04/2025   13:39:13  ( -70.84, 152.44)   73.46                68
 06/04/2025   14:28:36   (  70.16, -40.92) 06/04/2025   14:28:50  (  70.18, -40.89)    3.01                14
 06/04/2025   15:19:17   ( -70.03, 126.59) 06/04/2025   15:18:21  ( -70.02, 126.51)    3.18                56