Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 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)
 04/22/2025   23:01:41   (  70.16,-169.17) 04/22/2025   23:02:15  (  70.17,-169.16)    1.55                34
 04/22/2025   23:52:23   ( -70.04,  -1.68) 04/22/2025   23:51:45  ( -70.05,  -1.69)    1.24                38
 04/25/2025   14:27:57   ( -70.77, 138.34) 04/25/2025   14:29:06  ( -70.68, 139.83)   55.70                69
 04/25/2025   15:18:30   (  70.11, -53.30) 04/25/2025   15:18:41  (  70.14, -53.32)    3.12                11
 04/25/2025   16:09:13   ( -70.05, 114.11) 04/25/2025   16:08:11  ( -70.02, 114.15)    3.22                62
 04/28/2025   06:44:35   ( -70.21,-104.97) 04/28/2025   06:45:38  ( -70.23,-104.94)    2.46                63
 04/28/2025   07:35:19   (  70.12,  62.47) 04/28/2025   07:35:05  (  70.12,  62.55)    3.10                14
 04/28/2025   08:25:53   ( -69.59,-129.41) 04/28/2025   08:24:42  ( -69.62,-130.51)   42.71                71
 04/30/2025   23:01:24   ( -70.18,  10.87) 04/30/2025   23:02:03  ( -70.17,  10.87)    1.13                39
 04/30/2025   23:52:07   (  70.04, 178.38) 04/30/2025   23:51:30  (  70.06, 178.35)    1.67                37
 05/03/2025   14:27:40   (  70.75, -41.57) 05/03/2025   14:28:49  (  70.67, -40.13)   53.63                69
 05/03/2025   15:18:12   ( -70.11, 126.77) 05/03/2025   15:18:27  ( -70.12, 126.70)    2.86                15
 05/03/2025   16:08:56   (  70.03, -65.80) 05/03/2025   16:07:54  (  70.01, -65.81)    2.20                62