Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 8.  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)
 11/09/2021   08:48:13   ( -70.80,-132.71) 11/09/2021   08:49:24  ( -70.71,-132.01)   27.60                71
 11/09/2021   09:38:51   (  70.40,  35.25) 11/09/2021   09:38:55  (  70.39,  35.17)    3.19                 4
 11/09/2021   10:29:33   ( -70.33,-157.33) 11/09/2021   10:28:24  ( -70.33,-157.29)    1.41                69
 11/12/2021   01:04:35   ( -71.13, -17.32) 11/12/2021   01:05:44  ( -70.99, -15.71)   60.40                69
 11/12/2021   01:55:07   (  70.43, 151.16) 11/12/2021   01:55:19  (  70.45, 151.13)    2.21                12
 11/12/2021   02:45:49   ( -70.36, -41.40) 11/12/2021   02:44:49  ( -70.33, -41.41)    2.62                60
 11/14/2021   17:20:57   ( -71.42,  98.12) 11/14/2021   17:22:03  ( -71.36, 100.76)   94.12                66
 11/14/2021   18:11:24   (  70.47, -92.95) 11/14/2021   18:11:44  (  70.49, -92.93)    2.51                20
 11/14/2021   19:02:06   ( -70.39,  74.49) 11/14/2021   19:01:14  ( -70.38,  74.54)    2.08                52
 11/17/2021   10:27:40   (  70.48,  23.00) 11/17/2021   10:28:10  (  70.48,  22.93)    2.57                30
 11/17/2021   11:18:22   ( -70.39,-169.55) 11/17/2021   11:17:40  ( -70.37,-169.60)    3.36                42
 11/20/2021   02:43:56   (  70.50, 138.92) 11/20/2021   02:44:35  (  70.51, 138.85)    2.90                39
 11/20/2021   03:34:38   ( -70.40, -53.61) 11/20/2021   03:34:05  ( -70.40, -53.68)    2.59                33