Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 3.  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)
 05/03/2025   14:28:05   (  70.25, -40.91) 05/03/2025   14:29:13  (  70.23, -40.85)    3.08                68
 05/03/2025   15:18:46   ( -70.09, 126.65) 05/03/2025   15:18:43  ( -70.11, 126.62)    2.60                 3
 05/03/2025   16:09:26   (  69.77, -65.56) 05/03/2025   16:08:14  (  69.79, -66.19)   24.17                72
 05/06/2025   06:45:02   (  70.16,  74.98) 05/06/2025   06:45:42  (  70.14,  74.91)    3.38                40
 05/06/2025   07:35:44   ( -70.06,-117.55) 05/06/2025   07:35:11  ( -70.08,-117.54)    2.68                33
 05/08/2025   22:11:25   ( -70.72,  22.54) 05/08/2025   22:12:35  ( -70.62,  23.85)   49.63                70
 05/08/2025   23:02:00   (  70.14,-169.24) 05/08/2025   23:02:09  (  70.13,-169.22)    1.29                 9
 05/08/2025   23:52:42   ( -70.04,  -1.77) 05/08/2025   23:51:39  ( -70.02,  -1.75)    2.30                63
 05/11/2025   14:28:13   ( -70.19, 139.14) 05/11/2025   14:29:09  ( -70.20, 139.11)    1.40                56
 05/11/2025   15:18:57   (  70.08, -53.38) 05/11/2025   15:18:36  (  70.09, -53.40)    0.96                21
 05/11/2025   16:09:26   ( -69.29, 115.09) 05/11/2025   16:08:18  ( -69.32, 113.18)   75.09                68
 05/14/2025   05:54:44   (  71.13,  86.05) 05/14/2025   05:55:50  (  71.05,  88.64)   93.74                66
 05/14/2025   06:45:10   ( -70.19,-105.10) 05/14/2025   06:45:34  ( -70.17,-105.03)    3.29                24
 05/14/2025   07:35:53   (  70.03,  62.45) 05/14/2025   07:35:01  (  70.06,  62.45)    3.55                52
 05/16/2025   22:11:24   (  70.20,-156.67) 05/16/2025   22:12:30  (  70.22,-156.71)    3.06                66
 05/16/2025   23:02:06   ( -70.10,  10.80) 05/16/2025   23:02:00  ( -70.11,  10.77)    2.02                 6
 05/16/2025   23:52:43   (  69.61, 178.83) 05/16/2025   23:51:32  (  69.72, 177.87)   38.85                71