Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 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)
 04/30/2025   23:01:49   ( -70.13,  10.83) 04/30/2025   23:02:15  ( -70.16,  10.81)    3.20                26
 04/30/2025   23:52:33   (  70.03, 178.30) 04/30/2025   23:51:42  (  70.05, 178.30)    2.81                51
 05/03/2025   14:28:04   (  70.20, -40.84) 05/03/2025   14:29:13  (  70.22, -40.86)    2.69                69
 05/03/2025   15:18:46   ( -70.09, 126.65) 05/03/2025   15:18:43  ( -70.11, 126.62)    2.67                 3
 05/03/2025   16:09:26   (  69.78, -65.57) 05/03/2025   16:08:14  (  69.78, -66.19)   24.01                72
 05/06/2025   06:45:02   (  70.17,  74.97) 05/06/2025   06:45:41  (  70.19,  74.98)    2.31                39
 05/06/2025   07:35:44   ( -70.06,-117.55) 05/06/2025   07:35:11  ( -70.08,-117.54)    2.29                33
 05/08/2025   22:11:25   ( -70.72,  22.53) 05/08/2025   22:12:35  ( -70.61,  23.84)   49.62                70
 05/08/2025   23:01:59   (  70.10,-169.17) 05/08/2025   23:02:09  (  70.12,-169.24)    3.57                10
 05/08/2025   23:52:41   ( -69.99,  -1.69) 05/08/2025   23:51:39  ( -70.01,  -1.76)    3.52                62
 05/11/2025   14:28:13   ( -70.19, 139.13) 05/11/2025   14:29:09  ( -70.18, 139.08)    2.58                56
 05/11/2025   15:18:57   (  70.09, -53.40) 05/11/2025   15:18:36  (  70.06, -53.43)    3.39                21