Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 18.  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)
 07/20/2020   03:39:24   (  68.93, 124.45) 07/20/2020   03:39:52  (  68.92, 124.49)    2.66                28
 07/20/2020   04:30:05   ( -68.79, -68.04) 07/20/2020   04:29:22  ( -68.81, -68.02)    2.02                43
 07/22/2020   19:55:47   (  68.93,-119.63) 07/22/2020   19:56:21  (  68.93,-119.61)    0.79                34
 07/22/2020   20:46:29   ( -68.83,  47.81) 07/22/2020   20:45:51  ( -68.82,  47.88)    2.95                38
 07/25/2020   12:12:09   (  68.92,  -3.71) 07/25/2020   12:12:49  (  68.94,  -3.72)    2.13                40
 07/25/2020   13:02:51   ( -68.82, 163.74) 07/25/2020   13:02:19  ( -68.84, 163.78)    2.28                32
 07/28/2020   04:28:33   (  68.97, 112.13) 07/28/2020   04:29:18  (  68.94, 112.16)    3.06                45
 07/28/2020   05:19:14   ( -68.82, -80.34) 07/28/2020   05:18:48  ( -68.85, -80.33)    3.11                26
 07/30/2020   20:44:56   (  68.97,-131.95) 07/30/2020   20:45:47  (  68.94,-131.96)    2.52                51
 07/30/2020   21:35:38   ( -68.87,  35.51) 07/30/2020   21:35:17  ( -68.85,  35.55)    2.77                21
 07/30/2020   22:26:05   (  67.89,-155.91) 07/30/2020   22:24:58  (  67.94,-157.90)   83.26                67