Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 27.  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)
 04/28/2025   06:44:52   ( -70.21,-105.05) 04/28/2025   06:45:46  ( -70.19,-105.03)    3.09                54
 04/28/2025   07:35:35   (  70.06,  62.49) 04/28/2025   07:35:13  (  70.08,  62.47)    2.57                22
 04/28/2025   08:26:03   ( -69.21,-128.94) 04/28/2025   08:24:56  ( -69.26,-131.02)   82.13                67
 04/30/2025   22:11:24   (  71.17,-158.17) 04/30/2025   22:12:30  (  71.05,-155.49)   97.43                66
 04/30/2025   23:01:49   ( -70.16,  10.78) 04/30/2025   23:02:14  ( -70.18,  10.83)    2.44                25
 04/30/2025   23:52:32   (  70.01, 178.32) 04/30/2025   23:51:42  (  70.02, 178.25)    2.71                50
 05/03/2025   14:28:05   (  70.24, -40.90) 05/03/2025   14:29:13  (  70.23, -40.84)    2.18                68
 05/03/2025   15:18:47   ( -70.13, 126.59) 05/03/2025   15:18:43  ( -70.12, 126.64)    1.72                 4
 05/03/2025   16:09:26   (  69.76, -65.55) 05/03/2025   16:08:14  (  69.79, -66.18)   24.46                72
 05/06/2025   06:45:02   (  70.16,  74.98) 05/06/2025   06:45:41  (  70.19,  74.98)    3.28                39
 05/06/2025   07:35:45   ( -70.10,-117.62) 05/06/2025   07:35:11  ( -70.08,-117.54)    3.54                34
 05/08/2025   22:11:25   ( -70.72,  22.54) 05/08/2025   22:12:35  ( -70.60,  23.82)   48.85                70
 05/08/2025   23:02:00   (  70.15,-169.24) 05/08/2025   23:02:08  (  70.16,-169.18)    2.73                 8
 05/08/2025   23:52:42   ( -70.04,  -1.76) 05/08/2025   23:51:38  ( -70.05,  -1.70)    3.05                64