Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 18.  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   08:42:23   (  70.49,  46.27) 06/20/2019   08:43:11  (  70.51,  46.20)    3.27                48
 06/20/2019   09:33:05   ( -70.40,-146.28) 06/20/2019   09:32:41  ( -70.40,-146.33)    2.13                24
 06/23/2019   00:58:51   (  70.54, 162.07) 06/23/2019   00:59:41  (  70.51, 162.08)    3.66                50
 06/23/2019   01:49:32   ( -70.39, -30.38) 06/23/2019   01:49:11  ( -70.40, -30.45)    2.71                21
 06/23/2019   02:39:59   (  69.42, 138.39) 06/23/2019   02:38:53  (  69.47, 135.89)   98.12                66
 06/25/2019   17:15:18   (  70.54, -82.04) 06/25/2019   17:16:10  (  70.56, -81.97)    3.58                52
 06/25/2019   18:06:00   ( -70.44,  85.43) 06/25/2019   18:05:40  ( -70.45,  85.51)    3.27                20
 06/25/2019   18:56:27   (  69.52,-105.87) 06/25/2019   18:55:20  (  69.57,-108.09)   86.40                67
 06/28/2019   09:31:44   (  70.53,  33.85) 06/28/2019   09:32:39  (  70.55,  33.91)    2.90                55
 06/28/2019   10:22:26   ( -70.43,-158.67) 06/28/2019   10:22:09  ( -70.45,-158.61)    2.97                17
 06/28/2019   11:12:56   (  69.63,   9.86) 06/28/2019   11:11:48  (  69.68,   7.93)   74.75                68
 07/01/2019   01:48:11   (  70.53, 149.73) 07/01/2019   01:49:09  (  70.54, 149.78)    1.98                58
 07/01/2019   02:38:53   ( -70.42, -42.78) 07/01/2019   02:38:39  ( -70.44, -42.74)    2.51                14
 07/01/2019   03:29:25   (  69.73, 125.59) 07/01/2019   03:28:16  (  69.78, 123.96)   63.18                69