Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 7.  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)
 07/09/2019   02:37:31   (  70.54, 137.37) 07/09/2019   02:38:37  (  70.52, 137.39)    2.48                66
 07/09/2019   03:28:12   ( -70.39, -55.07) 07/09/2019   03:28:07  ( -70.41, -55.14)    3.48                 5
 07/09/2019   04:18:50   (  70.01, 112.84) 07/09/2019   04:17:39  (  70.03, 111.96)   33.34                71
 07/11/2019   18:53:58   (  70.55,-106.75) 07/11/2019   18:55:06  (  70.55,-106.68)    2.69                68
 07/11/2019   19:44:40   ( -70.44,  60.74) 07/11/2019   19:44:36  ( -70.44,  60.79)    2.02                 4
 07/11/2019   20:35:19   (  70.12,-131.44) 07/11/2019   20:34:06  (  70.18,-131.95)   20.35                73
 07/14/2019   11:10:25   (  70.55,   9.13) 07/14/2019   11:11:36  (  70.53,   9.17)    2.68                71
 07/14/2019   12:01:07   ( -70.44, 176.62) 07/14/2019   12:01:06  ( -70.42, 176.64)    2.61                 1
 07/14/2019   12:51:47   (  70.17, -15.65) 07/14/2019   12:50:35  (  70.20, -16.03)   14.96                72
 07/17/2019   03:26:52   (  70.61, 124.93) 07/17/2019   03:28:04  (  70.55, 125.09)    8.17                72
 07/17/2019   04:17:33   ( -70.44, -67.50) 07/17/2019   04:17:34  ( -70.45, -67.44)    2.27                 1
 07/17/2019   05:08:15   (  70.28, 100.07) 07/17/2019   05:07:02  (  70.29,  99.97)    3.86                73
 07/19/2019   19:43:21   (  70.71,-119.36) 07/19/2019   19:44:32  (  70.63,-118.91)   18.88                71
 07/19/2019   20:34:00   ( -70.45,  48.38) 07/19/2019   20:34:04  ( -70.42,  48.40)    3.03                 4
 07/19/2019   21:24:43   (  70.34,-144.13) 07/19/2019   21:23:31  (  70.31,-144.11)    3.32                72