Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 20.  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)
 06/20/2019   08:42:24   (  70.53,  46.19) 06/20/2019   08:43:11  (  70.51,  46.21)    2.47                47
 06/20/2019   09:33:05   ( -70.40,-146.27) 06/20/2019   09:32:41  ( -70.40,-146.33)    2.20                24
 06/23/2019   00:58:51   (  70.53, 162.08) 06/23/2019   00:59:41  (  70.51, 162.08)    2.43                50
 06/23/2019   01:49:32   ( -70.39, -30.37) 06/23/2019   01:49:11  ( -70.40, -30.45)    3.07                21
 06/23/2019   02:39:59   (  69.41, 138.40) 06/23/2019   02:38:53  (  69.47, 135.89)   98.23                66
 06/25/2019   17:15:17   (  70.53, -82.03) 06/25/2019   17:16:10  (  70.51, -82.04)    2.82                53
 06/25/2019   18:05:59   ( -70.43,  85.44) 06/25/2019   18:05:39  ( -70.45,  85.51)    3.47                20
 06/25/2019   18:56:27   (  69.52,-105.86) 06/25/2019   18:55:20  (  69.58,-108.08)   86.51                67
 06/28/2019   09:31:44   (  70.53,  33.85) 06/28/2019   09:32:39  (  70.55,  33.91)    3.34                55
 06/28/2019   10:22:26   ( -70.43,-158.67) 06/28/2019   10:22:09  ( -70.45,-158.61)    3.09                17
 06/28/2019   11:12:56   (  69.62,   9.87) 06/28/2019   11:11:48  (  69.68,   7.94)   74.85                68
 07/01/2019   01:48:11   (  70.53, 149.74) 07/01/2019   01:49:09  (  70.54, 149.78)    2.13                58
 07/01/2019   02:38:53   ( -70.42, -42.77) 07/01/2019   02:38:39  ( -70.44, -42.74)    2.43                14
 07/01/2019   03:29:25   (  69.73, 125.60) 07/01/2019   03:28:16  (  69.78, 123.96)   63.24                69
 07/03/2019   18:04:38   (  70.53, -94.38) 07/03/2019   18:05:39  (  70.53, -94.36)    0.81                61
 07/03/2019   18:55:20   ( -70.42,  73.12) 07/03/2019   18:55:09  ( -70.43,  73.12)    1.45                11
 07/03/2019   19:45:54   (  69.84,-118.68) 07/03/2019   19:44:44  (  69.88,-120.02)   51.69                70