Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 10.  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   06:45:31   ( -70.43,-104.49) 08/10/2019   06:46:03  ( -70.44,-104.53)    2.28                32
 08/10/2019   07:36:15   (  70.34,  62.96) 08/10/2019   07:35:30  (  70.34,  62.96)    0.56                45
 08/12/2019   23:01:58   ( -70.44,  11.37) 08/12/2019   23:02:33  ( -70.44,  11.35)    0.94                35
 08/12/2019   23:52:42   (  70.35, 178.83) 08/12/2019   23:52:00  (  70.34, 178.84)    1.34                42
 08/15/2019   15:18:25   ( -70.46, 127.23) 08/15/2019   15:19:03  ( -70.44, 127.22)    2.15                38
 08/15/2019   16:09:08   (  70.31, -65.23) 08/15/2019   16:08:30  (  70.33, -65.29)    3.27                38
 08/18/2019   07:34:51   ( -70.43,-116.83) 08/18/2019   07:35:33  ( -70.44,-116.91)    3.15                42
 08/18/2019   08:25:35   (  70.33,  50.63) 08/18/2019   08:25:00  (  70.33,  50.58)    2.15                35
 08/20/2019   23:51:17   ( -70.44,  -0.97) 08/20/2019   23:52:02  ( -70.43,  -1.04)    3.27                45
 08/21/2019   00:42:01   (  70.35, 166.49) 08/21/2019   00:41:28  (  70.37, 166.52)    2.59                33
 08/23/2019   16:07:44   ( -70.46, 114.89) 08/23/2019   16:08:31  ( -70.47, 114.90)    0.80                47
 08/23/2019   16:58:28   (  70.37, -77.65) 08/23/2019   16:57:58  (  70.35, -77.62)    1.78                30