Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 10.  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)
 07/11/2019   18:53:58   (  70.53,-106.73) 07/11/2019   18:55:06  (  70.56,-106.68)    3.08                68
 07/11/2019   19:44:40   ( -70.43,  60.75) 07/11/2019   19:44:36  ( -70.44,  60.79)    1.52                 4
 07/11/2019   20:35:19   (  70.10,-131.43) 07/11/2019   20:34:07  (  70.12,-132.03)   23.01                72
 07/14/2019   11:10:25   (  70.53,   9.16) 07/14/2019   11:11:36  (  70.53,   9.16)    1.00                71
 07/14/2019   12:01:07   ( -70.43, 176.64) 07/14/2019   12:01:06  ( -70.41, 176.63)    1.88                 1
 07/14/2019   12:51:47   (  70.16, -15.62) 07/14/2019   12:50:35  (  70.20, -16.04)   16.35                72
 07/17/2019   03:26:52   (  70.59, 124.96) 07/17/2019   03:28:04  (  70.55, 125.07)    6.23                72
 07/17/2019   04:17:33   ( -70.43, -67.47) 07/17/2019   04:17:34  ( -70.44, -67.46)    1.19                 1
 07/17/2019   05:08:15   (  70.26, 100.10) 07/17/2019   05:07:02  (  70.28,  99.96)    5.63                73
 07/19/2019   19:43:21   (  70.69,-119.33) 07/19/2019   19:44:32  (  70.62,-118.94)   16.52                71
 07/19/2019   20:34:00   ( -70.42,  48.42) 07/19/2019   20:34:04  ( -70.40,  48.38)    3.05                 4
 07/19/2019   21:24:43   (  70.31,-144.10) 07/19/2019   21:23:31  (  70.29,-144.14)    2.77                72
 07/22/2019   11:59:49   (  70.74,  -3.52) 07/22/2019   12:01:01  (  70.63,  -3.03)   21.94                72
 07/22/2019   12:50:27   ( -70.42, 164.31) 07/22/2019   12:50:33  ( -70.42, 164.28)    1.14                 6
 07/22/2019   13:41:10   (  70.31, -28.21) 07/22/2019   13:40:00  (  70.31, -28.23)    1.18                70