Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2025 4 15.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2025   13:57:13   ( -77.44, 150.80) 04/17/2025   13:58:16  ( -77.45, 150.97)    4.20                63
 04/17/2025   14:47:58   (  77.40, -41.70) 04/17/2025   14:47:36  (  77.40, -41.53)    4.33                22
 04/20/2025   01:09:28   ( -77.41, -17.10) 04/20/2025   01:09:33  ( -77.40, -17.06)    1.70                 5
 04/20/2025   02:00:06   (  77.08, 151.73) 04/20/2025   01:58:58  (  77.11, 149.53)   54.81                68
 04/22/2025   11:31:00   (  77.43,   7.51) 04/22/2025   11:31:28  (  77.41,   7.44)    3.07                28
 04/22/2025   12:21:43   ( -77.40, 174.97) 04/22/2025   12:20:48  ( -77.41, 175.11)    3.66                55
 04/24/2025   21:52:30   ( -77.46,  32.05) 04/24/2025   21:53:23  ( -77.44,  32.03)    2.71                53
 04/24/2025   22:43:15   (  77.43,-160.48) 04/24/2025   22:42:42  (  77.42,-160.38)    2.65                33
 04/27/2025   08:14:03   (  77.54,  56.35) 04/27/2025   08:15:15  (  77.49,  56.72)   10.47                72
 04/27/2025   09:04:44   ( -77.43,-135.77) 04/27/2025   09:04:37  ( -77.42,-135.91)    3.62                 7