Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 26.  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)
 06/28/2021   06:59:36   (  70.24,  74.28) 06/28/2021   07:00:47  (  70.11,  74.98)   30.53                71
 06/28/2021   07:50:11   ( -69.81,-117.74) 06/28/2021   07:50:20  ( -69.83,-117.77)    2.76                 9
 06/28/2021   08:40:55   (  69.72,  49.71) 06/28/2021   08:39:47  (  69.73,  49.73)    0.98                68
 06/30/2021   23:15:58   (  70.47,-170.14) 06/30/2021   23:17:07  (  70.40,-168.71)   53.64                69
 07/01/2021   00:06:30   ( -69.87,  -1.89) 07/01/2021   00:06:45  ( -69.85,  -1.86)    2.27                15
 07/01/2021   00:57:13   (  69.73, 165.63) 07/01/2021   00:56:12  (  69.74, 165.63)    0.92                61
 07/03/2021   15:32:22   (  70.75, -54.65) 07/03/2021   15:33:29  (  70.64, -52.49)   80.55                67
 07/03/2021   16:22:49   ( -69.88, 114.04) 07/03/2021   16:23:11  ( -69.87, 114.04)    1.35                22
 07/03/2021   17:13:32   (  69.75, -78.46) 07/03/2021   17:12:38  (  69.76, -78.47)    0.71                54
 07/06/2021   08:39:08   ( -69.89,-130.04) 07/06/2021   08:39:37  ( -69.88,-130.06)    1.74                29
 07/06/2021   09:29:51   (  69.77,  37.46) 07/06/2021   09:29:04  (  69.76,  37.42)    1.71                47
 07/09/2021   00:55:27   ( -69.91, -14.12) 07/09/2021   00:56:03  ( -69.89, -14.18)    3.26                36
 07/09/2021   01:46:10   (  69.79, 153.37) 07/09/2021   01:45:29  (  69.82, 153.38)    3.43                41