Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 2.  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   (  70.24, -40.90) 05/03/2025   14:29:13  (  70.23, -40.85)    2.62                68
 05/03/2025   15:18:47   ( -70.14, 126.58) 05/03/2025   15:18:43  ( -70.12, 126.62)    3.03                 4
 05/03/2025   16:09:26   (  69.77, -65.56) 05/03/2025   16:08:14  (  69.79, -66.18)   24.24                72
 05/06/2025   06:45:02   (  70.16,  74.98) 05/06/2025   06:45:42  (  70.14,  74.91)    3.01                40
 05/06/2025   07:35:44   ( -70.05,-117.54) 05/06/2025   07:35:12  ( -70.03,-117.61)    3.53                32
 05/08/2025   22:11:25   ( -70.71,  22.55) 05/08/2025   22:12:35  ( -70.62,  23.85)   48.95                70
 05/08/2025   23:02:00   (  70.14,-169.23) 05/08/2025   23:02:09  (  70.13,-169.22)    0.35                 9
 05/08/2025   23:52:42   ( -70.03,  -1.75) 05/08/2025   23:51:39  ( -70.02,  -1.74)    1.04                63
 05/11/2025   14:28:13   ( -70.18, 139.16) 05/11/2025   14:29:09  ( -70.19, 139.11)    2.73                56
 05/11/2025   15:18:57   (  70.07, -53.37) 05/11/2025   15:18:36  (  70.08, -53.41)    2.06                21
 05/11/2025   16:09:26   ( -69.28, 115.11) 05/11/2025   16:08:18  ( -69.32, 113.18)   75.96                68
 05/14/2025   05:54:44   (  71.11,  86.08) 05/14/2025   05:55:50  (  71.04,  88.63)   92.40                66
 05/14/2025   06:45:10   ( -70.17,-105.08) 05/14/2025   06:45:34  ( -70.17,-105.05)    1.70                24
 05/14/2025   07:35:54   (  70.07,  62.39) 05/14/2025   07:35:01  (  70.05,  62.44)    2.35                53