Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 4.  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)
 05/06/2025   06:45:02   (  70.18,  74.95) 05/06/2025   06:45:41  (  70.18,  74.97)    0.86                39
 05/06/2025   07:35:44   ( -70.07,-117.57) 05/06/2025   07:35:11  ( -70.07,-117.56)    0.81                33
 05/08/2025   22:11:25   ( -70.73,  22.51) 05/08/2025   22:12:35  ( -70.61,  23.83)   50.42                70
 05/08/2025   23:01:59   (  70.10,-169.18) 05/08/2025   23:02:09  (  70.12,-169.24)    3.13                10
 05/08/2025   23:52:41   ( -70.00,  -1.70) 05/08/2025   23:51:39  ( -70.01,  -1.76)    2.37                62
 05/11/2025   14:28:13   ( -70.20, 139.12) 05/11/2025   14:29:09  ( -70.19, 139.10)    1.53                56
 05/11/2025   15:18:57   (  70.09, -53.40) 05/11/2025   15:18:36  (  70.08, -53.41)    1.31                21
 05/11/2025   16:09:26   ( -69.30, 115.07) 05/11/2025   16:08:17  ( -69.36, 113.24)   72.19                69
 05/14/2025   05:54:45   (  71.14,  86.04) 05/14/2025   05:55:51  (  71.05,  88.64)   94.32                66
 05/14/2025   06:45:10   ( -70.15,-105.04) 05/14/2025   06:45:35  ( -70.17,-105.04)    2.73                25
 05/14/2025   07:35:54   (  70.04,  62.44) 05/14/2025   07:35:02  (  70.06,  62.45)    2.58                52
 05/16/2025   22:11:24   (  70.20,-156.68) 05/16/2025   22:12:30  (  70.23,-156.70)    2.95                66
 05/16/2025   23:02:06   ( -70.10,  10.79) 05/16/2025   23:02:00  ( -70.12,  10.78)    1.82                 6
 05/16/2025   23:52:44   (  69.67, 178.74) 05/16/2025   23:51:32  (  69.73, 177.88)   33.77                72