Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 29.  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)
 03/29/2025   22:11:39   (  70.49,-157.14) 03/29/2025   22:12:49  (  70.41,-156.42)   28.43                70
 03/29/2025   23:02:16   ( -70.12,  10.76) 03/29/2025   23:02:22  ( -70.13,  10.81)    2.18                 6
 03/29/2025   23:52:59   (  69.98, 178.29) 03/29/2025   23:51:50  (  69.97, 178.23)    2.39                69
 04/01/2025   14:28:25   (  70.18, -40.86) 04/01/2025   14:29:20  (  70.17, -40.88)    0.92                55
 04/01/2025   15:19:07   ( -70.06, 126.63) 04/01/2025   15:18:50  ( -70.06, 126.60)    1.36                17
 04/01/2025   16:09:37   (  69.23, -64.84) 04/01/2025   16:08:29  (  69.29, -66.81)   77.93                68
 04/04/2025   06:45:16   (  70.14,  74.99) 04/04/2025   06:45:46  (  70.15,  74.98)    1.98                30
 04/04/2025   07:35:58   ( -70.02,-117.52) 04/04/2025   07:35:16  ( -70.04,-117.54)    3.17                42
 04/06/2025   22:11:30   ( -70.56,  22.80) 04/06/2025   22:12:41  ( -70.41,  23.61)   33.92                71
 04/06/2025   23:02:07   (  70.11,-169.19) 04/06/2025   23:02:11  (  70.13,-169.15)    2.89                 4
 04/06/2025   23:52:49   ( -69.99,  -1.69) 04/06/2025   23:51:42  ( -69.97,  -1.75)    2.80                67
 04/09/2025   14:28:13   ( -70.18, 139.18) 04/09/2025   14:29:08  ( -70.18, 139.16)    0.78                55
 04/09/2025   15:18:56   (  70.05, -53.31) 04/09/2025   15:18:35  (  70.06, -53.36)    1.90                21