Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 3.  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)
 05/05/2021   15:51:58   (  70.63, -59.78) 05/05/2021   15:53:04  (  70.49, -57.35)   91.40                66
 05/05/2021   16:42:22   ( -69.63, 109.10) 05/05/2021   16:42:48  ( -69.61, 109.04)    3.12                26
 05/05/2021   17:33:06   (  69.53, -83.45) 05/05/2021   17:32:15  (  69.50, -83.46)    2.67                51
 05/08/2021   08:58:42   ( -69.65,-135.00) 05/08/2021   08:59:14  ( -69.64,-135.04)    2.19                32
 05/08/2021   09:49:26   (  69.55,  32.45) 05/08/2021   09:48:41  (  69.53,  32.45)    2.54                45
 05/11/2021   01:15:01   ( -69.68, -19.11) 05/11/2021   01:15:39  ( -69.66, -19.13)    2.11                38
 05/11/2021   02:05:45   (  69.58, 148.35) 05/11/2021   02:05:06  (  69.55, 148.36)    3.30                39
 05/13/2021   17:31:21   ( -69.71,  96.79) 05/13/2021   17:32:05  ( -69.68,  96.78)    3.09                44
 05/13/2021   18:22:04   (  69.56, -95.68) 05/13/2021   18:21:32  (  69.57, -95.74)    2.63                32
 05/16/2021   09:47:41   ( -69.74,-147.32) 05/16/2021   09:48:30  ( -69.75,-147.25)    2.80                49
 05/16/2021   10:38:24   (  69.59,  20.22) 05/16/2021   10:37:58  (  69.58,  20.16)    2.64                26