Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 30.  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)
 07/02/2020   05:12:17   ( -70.56, -81.12) 07/02/2020   05:13:00  ( -70.55, -81.20)    3.16                43
 07/02/2020   06:03:01   (  70.49,  86.31) 07/02/2020   06:02:26  (  70.51,  86.38)    3.37                35
 07/04/2020   21:28:41   ( -70.60,  34.73) 07/04/2020   21:29:30  ( -70.57,  34.71)    3.34                49
 07/04/2020   22:19:24   (  70.48,-157.76) 07/04/2020   22:18:57  (  70.47,-157.80)    1.68                27
 07/07/2020   13:45:03   ( -70.58, 150.67) 07/07/2020   13:45:59  ( -70.59, 150.61)    2.11                56
 07/07/2020   14:35:46   (  70.47, -41.83) 07/07/2020   14:35:26  (  70.48, -41.90)    2.91                20
 07/07/2020   15:26:15   ( -69.69, 126.68) 07/07/2020   15:25:07  ( -69.77, 124.72)   76.28                68
 07/10/2020   06:01:27   ( -70.62, -93.48) 07/10/2020   06:02:29  ( -70.60, -93.49)    2.33                62
 07/10/2020   06:52:10   (  70.51,  74.01) 07/10/2020   06:51:56  (  70.49,  74.00)    1.93                14
 07/10/2020   07:42:43   ( -69.94,-117.78) 07/10/2020   07:41:33  ( -70.01,-119.08)   50.01                70
 07/12/2020   22:17:50   ( -70.61,  22.45) 07/12/2020   22:18:59  ( -70.61,  22.41)    1.51                69
 07/12/2020   23:08:33   (  70.50,-170.07) 07/12/2020   23:08:26  (  70.50,-170.11)    1.52                 7
 07/12/2020   23:59:11   ( -70.19,  -2.25) 07/12/2020   23:57:59  ( -70.24,  -2.87)   23.81                72