Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 22.  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)
 06/23/2019   00:58:51   (  70.54, 162.07) 06/23/2019   00:59:40  (  70.55, 162.14)    2.86                49
 06/23/2019   01:49:32   ( -70.40, -30.39) 06/23/2019   01:49:10  ( -70.43, -30.39)    3.55                22
 06/23/2019   02:39:59   (  69.42, 138.39) 06/23/2019   02:38:53  (  69.45, 135.87)   98.45                66
 06/25/2019   17:15:18   (  70.54, -82.04) 06/25/2019   17:16:10  (  70.54, -81.99)    2.08                52
 06/25/2019   18:06:00   ( -70.44,  85.42) 06/25/2019   18:05:40  ( -70.43,  85.48)    2.59                20
 06/25/2019   18:56:28   (  69.52,-105.87) 06/25/2019   18:55:21  (  69.56,-108.11)   87.02                67
 06/28/2019   09:31:44   (  70.53,  33.85) 06/28/2019   09:32:39  (  70.53,  33.88)    1.07                55
 06/28/2019   10:22:26   ( -70.43,-158.68) 06/28/2019   10:22:09  ( -70.43,-158.65)    1.39                17
 06/28/2019   11:12:56   (  69.62,   9.87) 06/28/2019   11:11:48  (  69.66,   7.91)   75.75                68
 07/01/2019   01:48:11   (  70.53, 149.74) 07/01/2019   01:49:09  (  70.52, 149.74)    0.58                58
 07/01/2019   02:38:53   ( -70.42, -42.77) 07/01/2019   02:38:39  ( -70.42, -42.78)    0.70                14
 07/01/2019   03:29:25   (  69.72, 125.60) 07/01/2019   03:28:16  (  69.76, 123.93)   64.62                69
 07/03/2019   18:04:38   (  70.52, -94.36) 07/03/2019   18:05:39  (  70.51, -94.40)    2.01                61
 07/03/2019   18:55:20   ( -70.41,  73.13) 07/03/2019   18:55:09  ( -70.40,  73.08)    1.76                11
 07/03/2019   19:45:54   (  69.82,-118.66) 07/03/2019   19:44:44  (  69.85,-120.06)   53.64                70