Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 13.  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  ( -71.31, 100.69)   91.88                66
 11/14/2021   18:11:25   (  70.47, -92.95) 11/14/2021   18:11:45  (  70.45, -92.99)    1.99                20
 11/14/2021   19:02:07   ( -70.39,  74.50) 11/14/2021   19:01:14  ( -70.39,  74.55)    2.02                53
 11/17/2021   10:27:42   (  70.48,  22.98) 11/17/2021   10:28:10  (  70.50,  22.96)    1.83                28
 11/17/2021   11:18:24   ( -70.40,-169.56) 11/17/2021   11:17:40  ( -70.38,-169.58)    1.71                44
 11/20/2021   02:43:59   (  70.56, 138.82) 11/20/2021   02:44:34  (  70.54, 138.89)    3.46                35
 11/20/2021   03:34:40   ( -70.41, -53.63) 11/20/2021   03:34:04  ( -70.42, -53.64)    1.57                36
 11/22/2021   19:00:16   (  70.58,-105.26) 11/22/2021   19:00:59  (  70.57,-105.18)    3.16                43
 11/22/2021   19:50:58   ( -70.48,  62.22) 11/22/2021   19:50:29  ( -70.46,  62.29)    3.52                29
 11/25/2021   11:16:32   (  70.55,  10.74) 11/25/2021   11:17:25  (  70.54,  10.66)    3.12                53
 11/25/2021   12:07:15   ( -70.50, 178.14) 11/25/2021   12:06:54  ( -70.49, 178.21)    2.90                21