Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 21.  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)
 04/22/2025   23:01:41   (  70.15,-169.15) 04/22/2025   23:02:16  (  70.13,-169.22)    3.20                35
 04/22/2025   23:52:24   ( -70.08,  -1.74) 04/22/2025   23:51:45  ( -70.07,  -1.67)    3.25                39
 04/25/2025   14:27:56   ( -70.76, 138.36) 04/25/2025   14:29:06  ( -70.64, 139.77)   53.53                70
 04/25/2025   15:18:30   (  70.15, -53.37) 04/25/2025   15:18:40  (  70.15, -53.30)    2.60                10
 04/25/2025   16:09:12   ( -70.03, 114.13) 04/25/2025   16:08:10  ( -70.04, 114.18)    1.90                62
 04/28/2025   06:44:35   ( -70.19,-104.95) 04/28/2025   06:45:39  ( -70.19,-105.00)    1.84                64
 04/28/2025   07:35:18   (  70.06,  62.57) 04/28/2025   07:35:06  (  70.08,  62.49)    3.61                12
 04/28/2025   08:25:53   ( -69.57,-129.39) 04/28/2025   08:24:42  ( -69.64,-130.49)   42.99                71
 04/30/2025   23:01:24   ( -70.16,  10.89) 04/30/2025   23:02:03  ( -70.19,  10.90)    2.72                39
 04/30/2025   23:52:08   (  70.08, 178.32) 04/30/2025   23:51:30  (  70.07, 178.38)    2.42                38
 05/03/2025   14:27:41   (  70.79, -41.63) 05/03/2025   14:28:50  (  70.64, -40.18)   55.91                69
 05/03/2025   15:18:13   ( -70.15, 126.71) 05/03/2025   15:18:27  ( -70.15, 126.74)    1.04                14
 05/03/2025   16:08:56   (  70.01, -65.78) 05/03/2025   16:07:54  (  70.03, -65.78)    1.99                62