Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 1.  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)
 11/01/2021   07:59:16   ( -70.44,-119.99) 11/01/2021   08:00:10  ( -70.46,-120.01)    1.70                54
 11/01/2021   08:50:00   (  70.35,  47.47) 11/01/2021   08:49:37  (  70.36,  47.49)    1.08                23
 11/01/2021   09:40:27   ( -69.50,-143.92) 11/01/2021   09:39:19  ( -69.58,-145.96)   79.83                68
 11/04/2021   00:15:34   ( -70.49,  -4.11) 11/04/2021   00:16:36  ( -70.49,  -4.08)    1.24                62
 11/04/2021   01:06:17   (  70.36, 163.41) 11/04/2021   01:06:03  (  70.39, 163.41)    3.56                14
 11/04/2021   01:56:51   ( -69.87, -28.51) 11/04/2021   01:55:40  ( -69.89, -29.66)   44.17                71
 11/06/2021   16:31:50   ( -70.49, 111.84) 11/06/2021   16:33:01  ( -70.52, 111.83)    2.86                71
 11/06/2021   17:22:34   (  70.42, -80.73) 11/06/2021   17:22:28  (  70.41, -80.68)    2.00                 6
 11/06/2021   18:13:13   ( -70.18,  86.96) 11/06/2021   18:11:59  ( -70.25,  86.71)   11.48                74
 11/09/2021   08:48:13   ( -70.81,-132.73) 11/09/2021   08:49:24  ( -70.70,-132.02)   28.63                71
 11/09/2021   09:38:51   (  70.43,  35.21) 11/09/2021   09:38:54  (  70.42,  35.22)    0.50                 3
 11/09/2021   10:29:32   ( -70.29,-157.26) 11/09/2021   10:28:24  ( -70.32,-157.31)    3.16                68
 11/12/2021   01:04:36   ( -71.13, -17.31) 11/12/2021   01:05:45  ( -70.97, -15.72)   60.02                69
 11/12/2021   01:55:08   (  70.44, 151.14) 11/12/2021   01:55:20  (  70.43, 151.10)    2.09                12
 11/12/2021   02:45:50   ( -70.35, -41.40) 11/12/2021   02:44:49  ( -70.38, -41.34)    3.36                61
 11/14/2021   17:20:58   ( -71.40,  98.17) 11/14/2021   17:22:05  ( -71.30, 100.67)   89.61                67
 11/14/2021   18:11:25   (  70.46, -92.93) 11/14/2021   18:11:45  (  70.48, -92.95)    2.08                20
 11/14/2021   19:02:06   ( -70.36,  74.54) 11/14/2021   19:01:14  ( -70.37,  74.53)    0.94                52