Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2025 4 17.  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   ( -73.69, -32.37) 04/18/2025   01:30:03  ( -73.67, -32.38)    2.25                71
 04/18/2025   02:19:35   (  73.57, 135.20) 04/18/2025   02:19:23  (  73.60, 135.14)    3.27                12
 04/20/2025   11:50:42   (  74.35,  -9.42) 04/20/2025   11:51:48  (  74.23,  -6.69)   83.34                66
 04/20/2025   12:41:12   ( -73.64, 159.65) 04/20/2025   12:41:20  ( -73.61, 159.64)    2.67                 8
 04/20/2025   13:31:53   (  73.43, -32.55) 04/20/2025   13:30:41  (  73.48, -32.96)   14.44                72
 04/22/2025   23:02:49   (  73.67,-175.84) 04/22/2025   23:03:14  (  73.65,-175.81)    2.85                25
 04/22/2025   23:53:32   ( -73.60,  -8.34) 04/22/2025   23:52:36  ( -73.57,  -8.31)    3.35                56
 04/25/2025   09:24:25   ( -73.71,-151.31) 04/25/2025   09:25:09  ( -73.70,-151.22)    2.65                44
 04/25/2025   10:15:08   (  73.60,  16.26) 04/25/2025   10:14:29  (  73.61,  16.25)    1.09                39
 04/27/2025   19:46:01   (  73.72,-126.73) 04/27/2025   19:47:02  (  73.69,-126.77)    2.89                61
 04/27/2025   20:36:44   ( -73.64,  40.76) 04/27/2025   20:36:24  ( -73.63,  40.76)    1.26                20
 04/30/2025   06:07:42   ( -74.01,-102.85) 04/30/2025   06:08:53  ( -73.89,-101.87)   33.03                71
 04/30/2025   06:58:20   (  73.66,  65.32) 04/30/2025   06:58:15  (  73.67,  65.34)    1.14                 5