Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 4 27.  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)
 04/29/2019   15:11:29   (  68.87, -48.68) 04/29/2019   15:12:25  (  68.86, -48.72)    1.86                56
 04/29/2019   16:02:10   ( -68.78, 118.78) 04/29/2019   16:01:55  ( -68.75, 118.77)    3.13                15
 04/29/2019   16:52:42   (  68.01, -72.92) 04/29/2019   16:51:33  (  68.03, -74.45)   63.77                69
 05/02/2019   07:27:57   (  68.90,  67.17) 05/02/2019   07:28:54  (  68.88,  67.18)    1.77                57
 05/02/2019   08:18:37   ( -68.74,-125.30) 05/02/2019   08:18:24  ( -68.77,-125.33)    2.89                13
 05/02/2019   09:09:11   (  68.08,  42.87) 05/02/2019   09:08:01  (  68.11,  41.51)   56.14                70
 05/04/2019   23:44:24   (  68.87,-176.91) 05/04/2019   23:45:23  (  68.90,-176.92)    3.26                59
 05/05/2019   00:35:05   ( -68.77,  -9.45) 05/05/2019   00:34:53  ( -68.79,  -9.43)    2.34                12
 05/05/2019   01:25:39   (  68.11, 158.72) 05/05/2019   01:24:29  (  68.18, 157.48)   51.90                70
 05/07/2019   16:00:51   (  68.90, -61.06) 05/07/2019   16:01:51  (  68.91, -61.02)    2.37                60
 05/07/2019   16:51:31   ( -68.74, 106.47) 05/07/2019   16:51:22  ( -68.75, 106.40)    2.89                 9
 05/07/2019   17:42:07   (  68.19, -85.51) 05/07/2019   17:40:56  (  68.25, -86.56)   44.11                71
 05/10/2019   08:17:18   (  68.87,  54.85) 05/10/2019   08:18:21  (  68.87,  54.80)    2.13                63
 05/10/2019   09:07:59   ( -68.77,-137.69) 05/10/2019   09:07:51  ( -68.76,-137.70)    0.87                 8
 05/10/2019   09:58:35   (  68.22,  30.34) 05/10/2019   09:57:24  (  68.32,  29.40)   40.26                71