Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 12.  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)
 11/14/2021   17:20:58   ( -71.42,  98.13) 11/14/2021   17:22:04  ( -71.32, 100.69)   91.94                66
 11/14/2021   18:11:25   (  70.47, -92.95) 11/14/2021   18:11:45  (  70.45, -92.99)    2.09                20
 11/14/2021   19:02:07   ( -70.39,  74.50) 11/14/2021   19:01:14  ( -70.39,  74.55)    2.11                53
 11/17/2021   10:27:42   (  70.49,  22.97) 11/17/2021   10:28:10  (  70.50,  22.95)    1.29                28
 11/17/2021   11:18:24   ( -70.40,-169.57) 11/17/2021   11:17:40  ( -70.38,-169.58)    1.90                44
 11/20/2021   02:43:58   (  70.51, 138.89) 11/20/2021   02:44:34  (  70.53, 138.89)    2.70                36
 11/20/2021   03:34:40   ( -70.42, -53.64) 11/20/2021   03:34:04  ( -70.42, -53.64)    0.81                36
 11/22/2021   19:00:15   (  70.53,-105.19) 11/22/2021   19:00:59  (  70.56,-105.19)    3.28                44
 11/22/2021   19:50:57   ( -70.43,  62.29) 11/22/2021   19:50:29  ( -70.45,  62.28)    2.23                28
 11/25/2021   11:16:32   (  70.56,  10.72) 11/25/2021   11:17:24  (  70.59,  10.73)    2.89                52
 11/25/2021   12:07:14   ( -70.46, 178.21) 11/25/2021   12:06:54  ( -70.48, 178.20)    2.59                20