Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 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)
 08/18/2019   07:34:51   ( -70.46,-116.87) 08/18/2019   07:35:32  ( -70.46,-116.86)    0.85                41
 08/18/2019   08:25:35   (  70.35,  50.60) 08/18/2019   08:24:59  (  70.36,  50.63)    1.59                36
 08/20/2019   23:51:18   ( -70.48,  -1.02) 08/20/2019   23:52:02  ( -70.46,  -0.99)    2.23                44
 08/21/2019   00:42:02   (  70.37, 166.46) 08/21/2019   00:41:29  (  70.35, 166.50)    2.52                33
 08/23/2019   16:07:43   ( -70.44, 114.92) 08/23/2019   16:08:31  ( -70.45, 114.88)    1.70                48
 08/23/2019   16:58:27   (  70.34, -77.60) 08/23/2019   16:57:58  (  70.34, -77.64)    1.28                29
 08/26/2019   08:24:10   ( -70.47,-129.23) 08/26/2019   08:25:01  ( -70.44,-129.26)    3.16                51
 08/26/2019   09:14:54   (  70.36,  38.25) 08/26/2019   09:14:27  (  70.38,  38.31)    3.37                27
 08/26/2019   10:05:19   ( -69.40,-153.00) 08/26/2019   10:04:12  ( -69.46,-155.36)   92.42                67
 08/29/2019   00:40:37   ( -70.49, -13.38) 08/29/2019   00:41:30  ( -70.48, -13.31)    2.52                53
 08/29/2019   01:31:21   (  70.38, 154.10) 08/29/2019   01:30:57  (  70.37, 154.16)    2.86                24