Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 20.  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)
 10/21/2020   22:54:11   (  69.51,-164.71) 10/21/2020   22:55:21  (  69.40,-163.84)   35.81                70
 10/21/2020   23:44:45   ( -69.02,   3.30) 10/21/2020   23:44:56  ( -69.02,   3.29)    0.39                11
 10/22/2020   00:35:29   (  68.92, 170.75) 10/22/2020   00:34:23  (  68.91, 170.80)    2.16                66
 10/24/2020   15:10:36   (  69.71, -49.08) 10/24/2020   15:11:45  (  69.58, -47.72)   54.55                69
 10/24/2020   16:01:07   ( -69.05, 119.17) 10/24/2020   16:01:23  ( -69.03, 119.20)    2.05                16
 10/24/2020   16:51:50   (  68.90, -73.31) 10/24/2020   16:50:50  (  68.92, -73.31)    1.74                60
 10/27/2020   07:27:02   (  69.91,  66.54) 10/27/2020   07:28:09  (  69.81,  68.48)   74.98                67
 10/27/2020   08:17:29   ( -69.03,-124.88) 10/27/2020   08:17:51  ( -69.04,-124.91)    1.78                22
 10/27/2020   09:08:13   (  68.95,  42.55) 10/27/2020   09:07:18  (  68.93,  42.58)    2.61                55
 10/29/2020   23:43:28   (  70.11,-177.85) 10/29/2020   23:44:34  (  69.98,-175.41)   93.70                66
 10/30/2020   00:33:52   ( -69.07,  -9.01) 10/30/2020   00:34:19  ( -69.05,  -9.02)    2.13                27
 10/30/2020   01:24:35   (  68.93, 158.48) 10/30/2020   01:23:46  (  68.93, 158.47)    0.98                49
 11/01/2020   16:50:15   ( -69.10, 106.86) 11/01/2020   16:50:46  ( -69.10, 106.93)    2.87                31
 11/01/2020   17:40:57   (  68.92, -85.58) 11/01/2020   17:40:14  (  68.92, -85.66)    2.84                43