Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 9.  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)
 08/10/2019   06:45:32   ( -70.45,-104.53) 08/10/2019   06:46:03  ( -70.47,-104.50)    1.93                31
 08/10/2019   07:36:16   (  70.36,  62.92) 08/10/2019   07:35:30  (  70.37,  63.00)    2.90                46
 08/12/2019   23:01:59   ( -70.47,  11.33) 08/12/2019   23:02:33  ( -70.47,  11.38)    1.90                34
 08/12/2019   23:52:42   (  70.32, 178.87) 08/12/2019   23:52:01  (  70.31, 178.79)    3.34                41
 08/15/2019   15:18:25   ( -70.48, 127.20) 08/15/2019   15:19:02  ( -70.47, 127.26)    2.96                37
 08/15/2019   16:09:08   (  70.34, -65.26) 08/15/2019   16:08:29  (  70.36, -65.25)    2.39                39
 08/18/2019   07:34:51   ( -70.44,-116.86) 08/18/2019   07:35:32  ( -70.46,-116.87)    1.79                41
 08/18/2019   08:25:35   (  70.35,  50.60) 08/18/2019   08:24:59  (  70.35,  50.61)    0.35                36
 08/20/2019   23:51:18   ( -70.46,  -0.99) 08/20/2019   23:52:02  ( -70.45,  -1.00)    1.08                44
 08/21/2019   00:42:02   (  70.36, 166.47) 08/21/2019   00:41:29  (  70.34, 166.47)    2.92                33