Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 9 7.  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)
 09/07/2019   21:28:02   ( -68.86,  37.03) 09/07/2019   21:28:55  ( -68.85,  37.05)    1.36                53
 09/07/2019   22:18:46   (  68.73,-155.49) 09/07/2019   22:18:22  (  68.75,-155.43)    3.19                24
 09/07/2019   23:09:13   ( -67.89,  12.92) 09/07/2019   23:08:04  ( -67.97,  11.26)   69.75                69
 09/10/2019   13:44:27   ( -68.83, 152.95) 09/10/2019   13:45:22  ( -68.85, 152.93)    1.96                55
 09/10/2019   14:35:11   (  68.71, -39.57) 09/10/2019   14:34:50  (  68.69, -39.62)    2.97                21
 09/10/2019   15:25:40   ( -67.97, 128.70) 09/10/2019   15:24:30  ( -68.02, 127.20)   62.65                70
 09/13/2019   06:00:54   ( -68.86, -91.20) 09/13/2019   06:01:50  ( -68.85, -91.19)    1.80                56
 09/13/2019   06:51:38   (  68.74,  76.27) 09/13/2019   06:51:17  (  68.74,  76.32)    1.80                21
 09/13/2019   07:42:07   ( -68.00,-115.45) 09/13/2019   07:40:57  ( -68.07,-116.85)   59.00                70
 09/15/2019   22:17:20   ( -68.84,  24.72) 09/15/2019   22:18:18  ( -68.84,  24.69)    1.18                58
 09/15/2019   23:08:04   (  68.72,-167.81) 09/15/2019   23:07:45  (  68.73,-167.81)    1.33                19
 09/15/2019   23:58:34   ( -68.03,   0.40) 09/15/2019   23:57:24  ( -68.12,  -0.91)   55.44                70
 09/18/2019   14:33:46   ( -68.82, 140.63) 09/18/2019   14:34:46  ( -68.84, 140.56)    3.47                60
 09/18/2019   15:24:30   (  68.70, -51.90) 09/18/2019   15:24:13  (  68.72, -51.94)    2.81                17
 09/18/2019   16:15:02   ( -68.12, 116.18) 09/18/2019   16:13:51  ( -68.18, 115.03)   48.00                71