Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 7 14.  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)
 07/15/2020   14:34:15   ( -70.74, 138.14) 07/15/2020   14:35:26  ( -70.71, 138.44)   11.59                71
 07/15/2020   15:24:56   (  70.52, -54.19) 07/15/2020   15:24:55  (  70.50, -54.22)    2.67                 1
 07/15/2020   16:15:38   ( -70.43, 113.29) 07/15/2020   16:14:24  ( -70.44, 113.32)    2.12                74
 07/18/2020   06:50:42   ( -70.94,-106.28) 07/18/2020   06:51:53  ( -70.87,-105.43)   31.87                71
 07/18/2020   07:41:20   (  70.57,  61.65) 07/18/2020   07:41:24  (  70.56,  61.73)    3.56                 4
 07/18/2020   08:32:01   ( -70.42,-130.79) 07/18/2020   08:30:54  ( -70.44,-130.80)    2.77                67
 07/20/2020   23:07:10   ( -71.20,   9.20) 07/20/2020   23:08:19  ( -71.09,  10.79)   58.26                69
 07/20/2020   23:57:43   (  70.57, 177.57) 07/20/2020   23:57:54  (  70.55, 177.61)    2.48                11
 07/21/2020   00:48:25   ( -70.46, -14.95) 07/21/2020   00:47:24  ( -70.44, -14.92)    2.85                61
 07/23/2020   15:23:37   ( -71.45, 124.67) 07/23/2020   15:24:43  ( -71.35, 127.09)   86.73                66
 07/23/2020   16:14:05   (  70.57, -66.52) 07/23/2020   16:14:23  (  70.54, -66.53)    2.95                18
 07/23/2020   17:04:47   ( -70.46, 100.97) 07/23/2020   17:03:53  ( -70.43, 100.95)    2.98                54
 07/26/2020   08:30:28   (  70.57,  49.40) 07/26/2020   08:30:52  (  70.58,  49.42)    1.93                24
 07/26/2020   09:21:10   ( -70.46,-143.11) 07/26/2020   09:20:22  ( -70.48,-143.10)    2.33                48