Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 12.  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)
 08/12/2019   23:01:58   ( -70.45,  11.37) 08/12/2019   23:02:33  ( -70.44,  11.35)    0.87                35
 08/12/2019   23:52:42   (  70.35, 178.83) 08/12/2019   23:52:00  (  70.34, 178.84)    1.26                42
 08/15/2019   15:18:25   ( -70.47, 127.22) 08/15/2019   15:19:03  ( -70.44, 127.22)    2.84                38
 08/15/2019   16:09:08   (  70.32, -65.23) 08/15/2019   16:08:30  (  70.34, -65.28)    2.81                38
 08/18/2019   07:34:51   ( -70.44,-116.84) 08/18/2019   07:35:33  ( -70.44,-116.90)    2.20                42
 08/18/2019   08:25:35   (  70.34,  50.62) 08/18/2019   08:25:00  (  70.33,  50.58)    1.78                35
 08/20/2019   23:51:17   ( -70.46,  -1.00) 08/20/2019   23:52:01  ( -70.48,  -0.95)    2.87                44
 08/21/2019   00:42:01   (  70.36, 166.47) 08/21/2019   00:41:28  (  70.37, 166.53)    2.49                33
 08/23/2019   16:07:44   ( -70.49, 114.85) 08/23/2019   16:08:31  ( -70.47, 114.91)    2.95                47
 08/23/2019   16:58:27   (  70.34, -77.60) 08/23/2019   16:57:58  (  70.36, -77.61)    2.57                29