Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 4.  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)
 11/06/2021   16:31:50   ( -70.50, 111.83) 11/06/2021   16:33:01  ( -70.50, 111.81)    0.98                71
 11/06/2021   17:22:34   (  70.42, -80.73) 11/06/2021   17:22:28  (  70.40, -80.69)    2.30                 6
 11/06/2021   18:13:12   ( -70.14,  87.03) 11/06/2021   18:12:00  ( -70.18,  86.61)   16.39                72
 11/09/2021   08:48:12   ( -70.76,-132.65) 11/09/2021   08:49:24  ( -70.67,-132.06)   23.62                72
 11/09/2021   09:38:51   (  70.43,  35.21) 11/09/2021   09:38:54  (  70.40,  35.19)    2.69                 3
 11/09/2021   10:29:32   ( -70.30,-157.26) 11/09/2021   10:28:24  ( -70.29,-157.34)    3.07                68
 11/12/2021   01:04:35   ( -71.08, -17.23) 11/12/2021   01:05:44  ( -70.99, -15.69)   56.22                69
 11/12/2021   01:55:08   (  70.44, 151.14) 11/12/2021   01:55:19  (  70.45, 151.13)    1.12                11
 11/12/2021   02:45:50   ( -70.35, -41.40) 11/12/2021   02:44:49  ( -70.34, -41.40)    1.83                61
 11/14/2021   17:20:58   ( -71.40,  98.17) 11/14/2021   17:22:04  ( -71.29, 100.66)   89.51                66
 11/14/2021   18:11:25   (  70.45, -92.93) 11/14/2021   18:11:44  (  70.48, -92.95)    2.81                19
 11/14/2021   19:02:07   ( -70.36,  74.54) 11/14/2021   19:01:14  ( -70.37,  74.53)    0.92                53
 11/17/2021   10:27:41   (  70.47,  23.00) 11/17/2021   10:28:08  (  70.50,  22.96)    2.99                27
 11/17/2021   11:18:23   ( -70.37,-169.53) 11/17/2021   11:17:38  ( -70.39,-169.56)    2.10                45