Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 18.  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)
 08/20/2019   23:51:17   ( -70.43,  -0.95) 08/20/2019   23:52:02  ( -70.44,  -1.01)    2.60                45
 08/21/2019   00:42:01   (  70.33, 166.53) 08/21/2019   00:41:29  (  70.34, 166.48)    2.38                32
 08/23/2019   16:07:44   ( -70.45, 114.91) 08/23/2019   16:08:32  ( -70.43, 114.85)    2.88                48
 08/23/2019   16:58:28   (  70.34, -77.61) 08/23/2019   16:57:59  (  70.33, -77.66)    2.53                29
 08/26/2019   08:24:10   ( -70.47,-129.23) 08/26/2019   08:25:00  ( -70.48,-129.20)    1.44                50
 08/26/2019   09:14:54   (  70.36,  38.25) 08/26/2019   09:14:27  (  70.37,  38.28)    1.47                27
 08/26/2019   10:05:19   ( -69.40,-153.00) 08/26/2019   10:04:12  ( -69.44,-155.38)   93.18                67
 08/29/2019   00:40:37   ( -70.49, -13.37) 08/29/2019   00:41:30  ( -70.46, -13.34)    2.70                53
 08/29/2019   01:31:21   (  70.38, 154.11) 08/29/2019   01:30:57  (  70.35, 154.14)    3.01                24
 08/29/2019   02:21:47   ( -69.48, -37.22) 08/29/2019   02:20:40  ( -69.54, -39.37)   84.26                67
 08/31/2019   16:57:03   ( -70.45, 102.57) 08/31/2019   16:58:00  ( -70.45, 102.52)    2.12                57
 08/31/2019   17:47:47   (  70.34, -89.95) 08/31/2019   17:47:27  (  70.33, -90.01)    2.49                20