Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 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)
 10/18/2019   22:43:37   (  70.45,-164.11) 10/18/2019   22:44:16  (  70.42,-164.08)    3.08                39
 10/18/2019   23:34:18   ( -70.31,   3.42) 10/18/2019   23:33:46  ( -70.31,   3.38)    1.57                32
 10/21/2019   15:00:03   (  70.44, -48.21) 10/21/2019   15:00:45  (  70.43, -48.19)    1.77                42
 10/21/2019   15:50:44   ( -70.31, 119.32) 10/21/2019   15:50:15  ( -70.32, 119.28)    2.04                29
 10/24/2019   07:16:28   (  70.44,  67.68) 10/24/2019   07:17:13  (  70.44,  67.71)    1.04                45
 10/24/2019   08:07:10   ( -70.35,-124.86) 10/24/2019   08:06:43  ( -70.33,-124.82)    2.74                27
 10/26/2019   23:32:54   (  70.44,-176.43) 10/26/2019   23:33:42  (  70.44,-176.41)    0.67                48
 10/27/2019   00:23:36   ( -70.34,  -8.96) 10/27/2019   00:23:12  ( -70.33,  -8.93)    1.31                24
 10/29/2019   15:49:20   (  70.44, -60.53) 10/29/2019   15:50:11  (  70.44, -60.53)    0.25                51
 10/29/2019   16:40:02   ( -70.34, 106.94) 10/29/2019   16:39:41  ( -70.34, 106.95)    0.28                21