Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 28.  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)
 10/29/2020   23:43:28   (  70.12,-177.87) 10/29/2020   23:44:34  (  70.00,-175.38)   95.24                66
 10/30/2020   00:33:52   ( -69.09,  -9.04) 10/30/2020   00:34:19  ( -69.06,  -9.01)    3.23                27
 10/30/2020   01:24:35   (  68.95, 158.47) 10/30/2020   01:23:46  (  68.95, 158.49)    1.18                49
 11/01/2020   16:50:13   ( -69.08, 106.89) 11/01/2020   16:50:46  ( -69.06, 106.88)    2.13                33
 11/01/2020   17:40:56   (  68.95, -85.62) 11/01/2020   17:40:13  (  68.95, -85.63)    0.37                43
 11/04/2020   09:06:35   ( -69.08,-137.19) 11/04/2020   09:07:14  ( -69.06,-137.25)    3.06                39
 11/04/2020   09:57:18   (  68.95,  30.30) 11/04/2020   09:56:41  (  68.94,  30.25)    2.24                37
 11/07/2020   01:22:58   ( -69.13, -21.34) 11/07/2020   01:23:41  ( -69.11, -21.30)    3.26                43
 11/07/2020   02:13:40   (  68.96, 146.21) 11/07/2020   02:13:08  (  68.99, 146.19)    3.28                32
 11/09/2020   17:39:20   ( -69.14,  94.57) 11/09/2020   17:40:08  ( -69.15,  94.64)    2.95                48
 11/09/2020   18:30:02   (  68.97, -97.88) 11/09/2020   18:29:36  (  68.97, -97.95)    2.65                26