Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 15.  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)
 06/17/2019   16:25:57   (  70.52, -69.67) 06/17/2019   16:26:41  (  70.53, -69.64)    1.95                44
 06/17/2019   17:16:39   ( -70.44,  97.78) 06/17/2019   17:16:11  ( -70.43,  97.83)    2.15                28
 06/20/2019   08:42:23   (  70.52,  46.22) 06/20/2019   08:43:10  (  70.53,  46.24)    1.66                47
 06/20/2019   09:33:05   ( -70.43,-146.32) 06/20/2019   09:32:40  ( -70.43,-146.29)    1.44                25
 06/23/2019   00:58:50   (  70.52, 162.10) 06/23/2019   00:59:40  (  70.53, 162.11)    0.89                50
 06/23/2019   01:49:32   ( -70.43, -30.44) 06/23/2019   01:49:10  ( -70.43, -30.41)    0.99                22
 06/23/2019   02:39:58   (  69.40, 138.42) 06/23/2019   02:38:52  (  69.49, 135.92)   97.97                66
 06/25/2019   17:15:17   (  70.53, -82.03) 06/25/2019   17:16:10  (  70.52, -82.02)    0.78                53
 06/25/2019   18:05:59   ( -70.43,  85.45) 06/25/2019   18:05:40  ( -70.42,  85.46)    0.89                19
 06/25/2019   18:56:27   (  69.52,-105.86) 06/25/2019   18:55:20  (  69.59,-108.06)   85.96                67
 06/28/2019   09:31:44   (  70.54,  33.85) 06/28/2019   09:32:40  (  70.51,  33.85)    2.58                56
 06/28/2019   10:22:26   ( -70.43,-158.67) 06/28/2019   10:22:10  ( -70.41,-158.67)    1.86                16