Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 17.  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   (  70.51, -69.66) 06/17/2019   16:26:41  (  70.53, -69.64)    2.34                44
 06/17/2019   17:16:39   ( -70.43,  97.79) 06/17/2019   17:16:11  ( -70.42,  97.83)    1.85                28
 06/20/2019   08:42:23   (  70.51,  46.23) 06/20/2019   08:43:10  (  70.53,  46.24)    2.72                47
 06/20/2019   09:33:05   ( -70.42,-146.31) 06/20/2019   09:32:40  ( -70.42,-146.29)    0.79                25
 06/23/2019   00:58:50   (  70.51, 162.12) 06/23/2019   00:59:40  (  70.53, 162.11)    2.85                50
 06/23/2019   01:49:32   ( -70.41, -30.41) 06/23/2019   01:49:10  ( -70.42, -30.41)    1.41                22
 06/25/2019   17:15:17   (  70.50, -81.99) 06/25/2019   17:16:10  (  70.52, -82.02)    2.82                53
 06/25/2019   18:05:59   ( -70.40,  85.49) 06/25/2019   18:05:40  ( -70.42,  85.46)    2.32                19
 06/25/2019   18:56:27   (  69.49,-105.82) 06/25/2019   18:55:21  (  69.54,-108.13)   90.23                66
 06/28/2019   09:31:44   (  70.50,  33.91) 06/28/2019   09:32:40  (  70.52,  33.85)    2.83                56
 06/28/2019   10:22:26   ( -70.39,-158.61) 06/28/2019   10:22:10  ( -70.41,-158.67)    3.12                16
 06/28/2019   11:12:56   (  69.59,   9.92) 06/28/2019   11:11:49  (  69.64,   7.88)   78.88                67
 07/01/2019   01:48:10   (  70.49, 149.80) 07/01/2019   01:49:09  (  70.50, 149.72)    3.19                59