Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 3 10.  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)
 03/10/2020   19:43:56   ( -68.81,  63.16) 03/10/2020   19:44:37  ( -68.80,  63.09)    2.98                41
 03/10/2020   20:34:39   (  68.68,-129.36) 03/10/2020   20:34:04  (  68.69,-129.40)    2.07                35
 03/13/2020   12:00:21   ( -68.84, 179.02) 03/13/2020   12:01:04  ( -68.87, 179.06)    3.35                43
 03/13/2020   12:51:04   (  68.71, -13.50) 03/13/2020   12:50:32  (  68.69, -13.51)    2.30                32
 03/16/2020   04:16:45   ( -68.82, -65.04) 03/16/2020   04:17:33  ( -68.82, -65.11)    2.70                48
 03/16/2020   05:07:28   (  68.69, 102.43) 03/16/2020   05:07:00  (  68.70, 102.38)    2.00                28
 03/16/2020   05:57:53   ( -67.69, -88.96) 03/16/2020   05:56:46  ( -67.71, -91.16)   92.90                67
 03/18/2020   20:33:09   ( -68.85,  50.82) 03/18/2020   20:34:00  ( -68.82,  50.78)    3.21                51
 03/18/2020   21:23:52   (  68.73,-141.71) 03/18/2020   21:23:26  (  68.75,-141.66)    3.24                26
 03/18/2020   22:14:19   ( -67.83,  26.77) 03/18/2020   22:13:10  ( -67.88,  24.92)   77.62                69
 03/21/2020   12:49:34   ( -68.88, 166.67) 03/21/2020   12:50:27  ( -68.88, 166.74)    2.86                53
 03/21/2020   13:40:16   (  68.72, -25.79) 03/21/2020   13:39:55  (  68.69, -25.84)    3.26                21
 03/21/2020   14:30:45   ( -67.92, 142.56) 03/21/2020   14:29:36  ( -67.99, 140.94)   68.18                69