Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 4 24.  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)
 04/25/2019   02:06:12   ( -70.67, -34.86) 04/25/2019   02:07:10  ( -70.66, -34.80)    2.57                58
 04/25/2019   02:56:56   (  70.55, 132.63) 04/25/2019   02:56:37  (  70.55, 132.69)    2.21                19
 04/25/2019   03:47:26   ( -69.87, -58.99) 04/25/2019   03:46:17  ( -69.89, -60.63)   62.56                69
 04/27/2019   18:22:38   ( -70.63,  81.08) 04/27/2019   18:23:37  ( -70.64,  81.06)    1.78                59
 04/27/2019   19:13:22   (  70.52,-111.43) 04/27/2019   19:13:04  (  70.53,-111.46)    2.25                18
 04/27/2019   20:03:53   ( -69.88,  56.87) 04/27/2019   20:02:43  ( -69.93,  55.31)   59.70                70
 04/30/2019   10:39:06   ( -70.64,-163.06) 04/30/2019   10:40:05  ( -70.63,-163.09)    2.17                59
 04/30/2019   11:29:50   (  70.53,   4.42) 04/30/2019   11:29:32  (  70.51,   4.39)    2.54                18
 04/30/2019   12:20:20   ( -69.85, 172.80) 04/30/2019   12:19:11  ( -69.92, 171.17)   63.17                69
 05/03/2019   02:55:34   ( -70.66, -47.21) 05/03/2019   02:56:32  ( -70.66, -47.16)    1.75                58
 05/03/2019   03:46:18   (  70.55, 120.28) 05/03/2019   03:45:59  (  70.54, 120.31)    1.50                19
 05/03/2019   04:36:48   ( -69.86, -71.34) 05/03/2019   04:35:39  ( -69.89, -72.99)   63.14                69
 05/05/2019   19:12:01   ( -70.62,  68.73) 05/05/2019   19:13:00  ( -70.63,  68.68)    2.21                59
 05/05/2019   20:02:45   (  70.51,-123.79) 05/05/2019   20:02:27  (  70.51,-123.85)    2.50                18