Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 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)
 08/04/2019   21:22:14   (  71.42,-145.24) 08/04/2019   21:23:20  (  71.31,-142.59)   95.20                66
 08/04/2019   22:12:39   ( -70.45,  23.70) 08/04/2019   22:13:04  ( -70.43,  23.69)    1.79                25
 08/04/2019   23:03:22   (  70.31,-168.77) 08/04/2019   23:02:31  (  70.33,-168.81)    2.55                51
 08/07/2019   14:29:06   ( -70.46, 139.57) 08/07/2019   14:29:34  ( -70.44, 139.59)    1.87                28
 08/07/2019   15:19:49   (  70.32, -52.90) 08/07/2019   15:19:01  (  70.34, -52.92)    2.03                48
 08/10/2019   06:45:32   ( -70.47,-104.56) 08/10/2019   06:46:03  ( -70.45,-104.52)    2.47                31
 08/10/2019   07:36:15   (  70.33,  62.97) 08/10/2019   07:35:30  (  70.34,  62.96)    1.39                45
 08/12/2019   23:01:59   ( -70.48,  11.31) 08/12/2019   23:02:33  ( -70.46,  11.36)    3.32                34
 08/12/2019   23:52:42   (  70.34, 178.84) 08/12/2019   23:52:00  (  70.35, 178.85)    0.63                42
 08/15/2019   15:18:25   ( -70.44, 127.26) 08/15/2019   15:19:03  ( -70.46, 127.24)    2.33                38
 08/15/2019   16:09:09   (  70.35, -65.29) 08/15/2019   16:08:30  (  70.35, -65.28)    0.59                39