Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 19.  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)
 06/20/2019   08:42:23   (  70.51,  46.23) 06/20/2019   08:43:10  (  70.54,  46.25)    3.34                47
 06/20/2019   09:33:05   ( -70.42,-146.31) 06/20/2019   09:32:40  ( -70.43,-146.29)    1.03                25
 06/23/2019   00:58:50   (  70.51, 162.12) 06/23/2019   00:59:40  (  70.54, 162.12)    3.35                50
 06/23/2019   01:49:32   ( -70.42, -30.42) 06/23/2019   01:49:10  ( -70.43, -30.40)    1.54                22
 06/25/2019   17:15:17   (  70.51, -81.99) 06/25/2019   17:16:10  (  70.53, -82.00)    3.04                53
 06/25/2019   18:05:59   ( -70.41,  85.48) 06/25/2019   18:05:40  ( -70.43,  85.47)    2.15                19
 06/25/2019   18:56:28   (  69.55,-105.91) 06/25/2019   18:55:21  (  69.55,-108.12)   86.05                67
 06/28/2019   09:31:44   (  70.51,  33.89) 06/28/2019   09:32:40  (  70.53,  33.87)    2.47                56
 06/28/2019   10:22:26   ( -70.40,-158.63) 06/28/2019   10:22:10  ( -70.42,-158.65)    2.51                16
 06/28/2019   11:12:57   (  69.65,   9.82) 06/28/2019   11:11:49  (  69.65,   7.90)   74.31                68
 07/01/2019   01:48:10   (  70.51, 149.77) 07/01/2019   01:49:09  (  70.52, 149.74)    1.86                59
 07/01/2019   02:38:52   ( -70.40, -42.74) 07/01/2019   02:38:39  ( -70.42, -42.78)    2.65                13
 07/01/2019   03:29:24   (  69.71, 125.63) 07/01/2019   03:28:15  (  69.81, 124.00)   63.78                69