Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 9 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)
 09/10/2019   13:44:27   ( -68.82, 152.97) 09/10/2019   13:45:22  ( -68.85, 152.94)    3.25                55
 09/10/2019   14:35:11   (  68.69, -39.55) 09/10/2019   14:34:50  (  68.69, -39.62)    2.66                21
 09/10/2019   15:25:40   ( -67.96, 128.72) 09/10/2019   15:24:30  ( -68.02, 127.21)   63.35                70
 09/13/2019   06:00:54   ( -68.85, -91.18) 09/13/2019   06:01:50  ( -68.84, -91.20)    1.12                56
 09/13/2019   06:51:38   (  68.72,  76.30) 09/13/2019   06:51:17  (  68.73,  76.32)    1.72                21
 09/13/2019   07:42:07   ( -67.98,-115.43) 09/13/2019   07:40:57  ( -68.06,-116.86)   60.16                70
 09/15/2019   22:17:20   ( -68.82,  24.74) 09/15/2019   22:18:18  ( -68.83,  24.67)    2.85                58
 09/15/2019   23:08:04   (  68.70,-167.78) 09/15/2019   23:07:45  (  68.72,-167.82)    2.74                19
 09/15/2019   23:58:34   ( -68.01,   0.42) 09/15/2019   23:57:24  ( -68.11,  -0.93)   57.11                70
 09/18/2019   14:33:46   ( -68.85, 140.59) 09/18/2019   14:34:44  ( -68.87, 140.60)    1.85                58
 09/18/2019   15:24:30   (  68.73, -51.94) 09/18/2019   15:24:11  (  68.75, -51.89)    3.33                19
 09/18/2019   16:15:01   ( -68.09, 116.21) 09/18/2019   16:13:50  ( -68.15, 115.00)   50.32                71
 09/21/2019   06:50:12   ( -68.83,-103.49) 09/21/2019   06:51:12  ( -68.85,-103.54)    3.11                60
 09/21/2019   07:40:56   (  68.71,  63.98) 09/21/2019   07:40:39  (  68.73,  63.96)    2.70                17
 09/21/2019   08:31:28   ( -68.12,-127.94) 09/21/2019   08:30:17  ( -68.18,-129.07)   47.29                71
 09/23/2019   23:06:39   ( -68.86,  12.36) 09/23/2019   23:07:39  ( -68.88,  12.38)    2.93                60
 09/23/2019   23:57:23   (  68.74, 179.82) 09/23/2019   23:57:06  (  68.76, 179.88)    3.31                17
 09/24/2019   00:47:55   ( -68.15, -12.09) 09/24/2019   00:46:44  ( -68.22, -13.15)   44.33                71