Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 2 18.  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)
 02/18/2020   08:42:02   (  69.02,  48.32) 02/18/2020   08:43:13  (  68.97,  48.57)   11.49                71
 02/18/2020   09:32:41   ( -68.80,-144.05) 02/18/2020   09:32:44  ( -68.81,-144.00)    2.10                 3
 02/18/2020   10:23:24   (  68.64,  23.47) 02/18/2020   10:22:12  (  68.64,  23.44)    1.19                72
 02/21/2020   00:58:31   (  69.26, 163.90) 02/21/2020   00:59:42  (  69.15, 164.66)   32.79                71
 02/21/2020   01:49:06   ( -68.81, -28.17) 02/21/2020   01:49:16  ( -68.82, -28.12)    2.42                10
 02/21/2020   02:39:49   (  68.67, 139.34) 02/21/2020   02:38:44  (  68.66, 139.32)    1.31                65
 02/23/2020   17:15:00   (  69.50, -80.54) 02/23/2020   17:16:09  (  69.44, -79.09)   56.98                69
 02/23/2020   18:05:31   ( -68.83,  87.71) 02/23/2020   18:05:48  ( -68.84,  87.77)    2.36                17
 02/23/2020   18:56:14   (  68.69,-104.79) 02/23/2020   18:55:16  (  68.67,-104.80)    2.85                58
 02/26/2020   09:31:30   (  69.79,  34.93) 02/26/2020   09:32:37  (  69.66,  37.08)   84.04                67
 02/26/2020   10:21:56   ( -68.85,-156.42) 02/26/2020   10:22:20  ( -68.85,-156.36)    2.45                24
 02/26/2020   11:12:39   (  68.72,  11.07) 02/26/2020   11:11:47  (  68.73,  11.14)    2.90                52
 02/29/2020   02:38:19   ( -68.83, -40.48) 02/29/2020   02:38:51  ( -68.85, -40.49)    3.33                32
 02/29/2020   03:29:02   (  68.70, 127.01) 02/29/2020   03:28:19  (  68.68, 126.94)    3.60                43
 03/02/2020   18:54:44   ( -68.85,  75.39) 03/02/2020   18:55:23  ( -68.86,  75.38)    0.57                39
 03/02/2020   19:45:27   (  68.73,-117.14) 03/02/2020   19:44:50  (  68.73,-117.13)    0.35                37