Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 7 4.  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)
 07/04/2020   21:28:40   ( -70.57,  34.78) 07/04/2020   21:29:29  ( -70.60,  34.75)    3.30                49
 07/04/2020   22:19:24   (  70.50,-157.79) 07/04/2020   22:18:56  (  70.50,-157.75)    1.54                28
 07/07/2020   13:45:04   ( -70.61, 150.63) 07/07/2020   13:45:59  ( -70.61, 150.65)    0.82                55
 07/07/2020   14:35:47   (  70.49, -41.87) 07/07/2020   14:35:26  (  70.51, -41.86)    2.19                21
 07/07/2020   15:26:16   ( -69.71, 126.65) 07/07/2020   15:25:08  ( -69.74, 124.68)   75.92                68
 07/10/2020   06:01:26   ( -70.60, -93.44) 07/10/2020   06:02:28  ( -70.62, -93.46)    2.53                62
 07/10/2020   06:52:10   (  70.54,  73.97) 07/10/2020   06:51:55  (  70.52,  74.03)    3.30                15
 07/10/2020   07:42:43   ( -69.97,-117.82) 07/10/2020   07:41:32  ( -70.03,-119.05)   47.12                71
 07/12/2020   22:17:50   ( -70.64,  22.40) 07/12/2020   22:18:58  ( -70.63,  22.43)    2.13                68
 07/12/2020   23:08:33   (  70.53,-170.11) 07/12/2020   23:08:25  (  70.52,-170.08)    1.87                 8
 07/12/2020   23:59:10   ( -70.17,  -2.22) 07/12/2020   23:57:58  ( -70.25,  -2.85)   25.32                72
 07/15/2020   14:34:15   ( -70.74, 138.15) 07/15/2020   14:35:27  ( -70.68, 138.40)   11.11                72
 07/15/2020   15:24:56   (  70.53, -54.20) 07/15/2020   15:24:55  (  70.52, -54.20)    1.32                 1
 07/15/2020   16:15:38   ( -70.42, 113.29) 07/15/2020   16:14:25  ( -70.42, 113.28)    0.99                73