Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 25.  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)
 10/26/2019   23:32:54   (  70.46,-176.45) 10/26/2019   23:33:42  (  70.45,-176.41)    2.13                48
 10/27/2019   00:23:35   ( -70.31,  -8.91) 10/27/2019   00:23:12  ( -70.33,  -8.94)    2.51                23
 10/29/2019   15:49:20   (  70.47, -60.58) 10/29/2019   15:50:11  (  70.45, -60.53)    3.16                51
 10/29/2019   16:40:01   ( -70.32, 106.98) 10/29/2019   16:39:41  ( -70.34, 106.94)    2.21                20
 10/29/2019   17:30:29   (  69.40, -84.34) 10/29/2019   17:29:22  (  69.46, -86.64)   89.90                67
 11/01/2019   08:05:45   (  70.43,  55.38) 11/01/2019   08:06:40  (  70.44,  55.34)    1.77                55
 11/01/2019   08:56:27   ( -70.33,-137.14) 11/01/2019   08:56:10  ( -70.33,-137.18)    1.47                17
 11/01/2019   09:46:57   (  69.52,  31.38) 11/01/2019   09:45:49  (  69.56,  29.39)   77.58                68
 11/04/2019   00:22:10   (  70.44, 171.25) 11/04/2019   00:23:08  (  70.43, 171.21)    1.90                58
 11/04/2019   01:12:52   ( -70.34, -21.27) 11/04/2019   01:12:38  ( -70.33, -21.31)    1.98                14
 11/04/2019   02:03:24   (  69.64, 147.09) 11/04/2019   02:02:15  (  69.67, 145.40)   65.31                69
 11/06/2019   16:38:36   (  70.46, -72.89) 11/06/2019   16:39:36  (  70.47, -72.84)    2.13                60
 11/06/2019   17:29:18   ( -70.35,  94.60) 11/06/2019   17:29:06  ( -70.37,  94.64)    2.34                12
 11/06/2019   18:19:51   (  69.72, -97.12) 11/06/2019   18:18:42  (  69.76, -98.58)   56.46                69