Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 6 19.  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)
 06/20/2020   15:48:25   ( -68.92, 122.13) 06/20/2020   15:49:09  ( -68.93, 122.17)    2.14                44
 06/20/2020   16:39:08   (  68.76, -70.35) 06/20/2020   16:38:37  (  68.76, -70.39)    1.75                31
 06/23/2020   08:04:49   ( -68.95,-122.00) 06/23/2020   08:05:38  ( -68.94,-121.94)    2.76                49
 06/23/2020   08:55:32   (  68.80,  45.51) 06/23/2020   08:55:05  (  68.82,  45.56)    3.41                27
 06/23/2020   09:45:58   ( -67.87,-145.97) 06/23/2020   09:44:50  ( -67.88,-147.94)   82.33                68
 06/26/2020   00:21:11   ( -68.93,  -6.06) 06/26/2020   00:22:06  ( -68.94,  -6.06)    1.47                55
 06/26/2020   01:11:54   (  68.79, 161.44) 06/26/2020   01:11:34  (  68.77, 161.37)    3.39                20
 06/26/2020   02:02:24   ( -68.07, -30.31) 06/26/2020   02:01:14  ( -68.11, -31.79)   61.92                70
 06/28/2020   16:37:35   ( -68.96, 109.80) 06/28/2020   16:38:35  ( -68.94, 109.82)    2.75                60
 06/28/2020   17:28:18   (  68.83, -82.71) 06/28/2020   17:28:02  (  68.82, -82.68)    1.44                16
 06/28/2020   18:18:51   ( -68.26,  85.36) 06/28/2020   18:17:40  ( -68.28,  84.28)   44.11                71
 07/01/2020   08:53:58   ( -68.94,-134.27) 07/01/2020   08:55:04  ( -68.93,-134.30)    1.97                66
 07/01/2020   09:44:41   (  68.82,  33.22) 07/01/2020   09:44:31  (  68.81,  33.19)    1.57                10
 07/01/2020   10:35:17   ( -68.41,-158.92) 07/01/2020   10:34:05  ( -68.49,-159.57)   28.27                72