Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 7 3.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2020   21:28:40   ( -70.59,  34.74) 07/04/2020   21:29:29  ( -70.57,  34.71)    2.54                49
 07/04/2020   22:19:23   (  70.47,-157.75) 07/04/2020   22:18:56  (  70.47,-157.79)    1.63                27
 07/07/2020   13:45:03   ( -70.58, 150.67) 07/07/2020   13:45:59  ( -70.58, 150.61)    2.47                56
 07/07/2020   14:35:47   (  70.51, -41.91) 07/07/2020   14:35:26  (  70.48, -41.90)    3.55                21
 07/07/2020   15:26:15   ( -69.68, 126.69) 07/07/2020   15:25:07  ( -69.77, 124.72)   76.63                68
 07/10/2020   06:01:27   ( -70.62, -93.48) 07/10/2020   06:02:29  ( -70.59, -93.50)    3.14                62
 07/10/2020   06:52:10   (  70.51,  74.01) 07/10/2020   06:51:56  (  70.49,  73.99)    2.37                14
 07/10/2020   07:42:43   ( -69.94,-117.78) 07/10/2020   07:41:33  ( -70.00,-119.09)   50.34                70
 07/12/2020   22:17:50   ( -70.61,  22.45) 07/12/2020   22:18:59  ( -70.60,  22.39)    2.60                69
 07/12/2020   23:08:33   (  70.50,-170.07) 07/12/2020   23:08:26  (  70.49,-170.12)    2.61                 7
 07/12/2020   23:59:11   ( -70.19,  -2.25) 07/12/2020   23:57:59  ( -70.22,  -2.89)   24.03                72
 07/15/2020   14:34:15   ( -70.76, 138.11) 07/15/2020   14:35:26  ( -70.71, 138.44)   13.36                71
 07/15/2020   15:24:56   (  70.55, -54.24) 07/15/2020   15:24:54  (  70.54, -54.16)    2.87                 2
 07/15/2020   16:15:37   ( -70.39, 113.34) 07/15/2020   16:14:25  ( -70.39, 113.23)    3.92                72