Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2025 4 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2025   01:28:52   ( -73.68, -32.36) 04/18/2025   01:30:03  ( -73.67, -32.37)    1.08                71
 04/18/2025   02:19:36   (  73.62, 135.09) 04/18/2025   02:19:23  (  73.60, 135.15)    2.70                13
 04/20/2025   11:50:42   (  74.35,  -9.41) 04/20/2025   11:51:48  (  74.23,  -6.68)   83.13                66
 04/20/2025   12:41:12   ( -73.63, 159.67) 04/20/2025   12:41:20  ( -73.62, 159.66)    1.20                 8
 04/20/2025   13:31:53   (  73.42, -32.54) 04/20/2025   13:30:41  (  73.49, -32.95)   15.02                72
 04/22/2025   23:02:49   (  73.67,-175.82) 04/22/2025   23:03:14  (  73.66,-175.79)    1.29                25
 04/22/2025   23:53:32   ( -73.59,  -8.32) 04/22/2025   23:52:36  ( -73.58,  -8.29)    1.48                56
 04/25/2025   09:24:25   ( -73.69,-151.28) 04/25/2025   09:25:10  ( -73.66,-151.31)    3.47                45
 04/25/2025   10:15:08   (  73.58,  16.28) 04/25/2025   10:14:29  (  73.62,  16.27)    3.48                39
 04/27/2025   19:46:01   (  73.70,-126.70) 04/27/2025   19:47:02  (  73.70,-126.74)    1.45                61
 04/27/2025   20:36:44   ( -73.62,  40.80) 04/27/2025   20:36:24  ( -73.64,  40.79)    2.26                20