Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 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)
 06/25/2019   17:15:17   (  70.53, -82.02) 06/25/2019   17:16:10  (  70.50, -82.04)    2.37                53
 06/25/2019   18:05:59   ( -70.43,  85.44) 06/25/2019   18:05:39  ( -70.45,  85.51)    2.98                20
 06/25/2019   18:56:27   (  69.51,-105.86) 06/25/2019   18:55:20  (  69.58,-108.08)   86.89                67
 06/28/2019   09:31:44   (  70.53,  33.86) 06/28/2019   09:32:39  (  70.55,  33.91)    3.08                55
 06/28/2019   10:22:26   ( -70.43,-158.67) 06/28/2019   10:22:09  ( -70.44,-158.62)    2.13                17
 06/28/2019   11:12:56   (  69.62,   9.87) 06/28/2019   11:11:48  (  69.68,   7.93)   75.31                68
 07/01/2019   01:48:11   (  70.53, 149.74) 07/01/2019   01:49:09  (  70.54, 149.77)    1.26                58
 07/01/2019   02:38:53   ( -70.43, -42.78) 07/01/2019   02:38:39  ( -70.43, -42.76)    0.90                14
 07/01/2019   03:29:25   (  69.73, 125.60) 07/01/2019   03:28:16  (  69.77, 123.95)   63.78                69
 07/03/2019   18:04:38   (  70.53, -94.38) 07/03/2019   18:05:39  (  70.52, -94.38)    1.32                61
 07/03/2019   18:55:19   ( -70.42,  73.11) 07/03/2019   18:55:08  ( -70.42,  73.10)    0.97                11
 07/03/2019   19:45:53   (  69.84,-118.68) 07/03/2019   19:44:43  (  69.87,-120.04)   52.31                70
 07/06/2019   10:21:04   (  70.54,  21.50) 07/06/2019   10:22:07  (  70.55,  21.56)    3.02                63
 07/06/2019   11:11:46   ( -70.42,-171.01) 07/06/2019   11:11:38  ( -70.40,-171.04)    3.22                 8
 07/06/2019   12:02:21   (  69.89,  -2.88) 07/06/2019   12:01:11  (  69.96,  -4.03)   44.56                70