Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 4 1.  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)
 04/02/2020   01:22:56   (  71.03, 155.25) 04/02/2020   01:24:06  (  70.90, 156.40)   44.08                70
 04/02/2020   02:13:30   ( -70.52, -36.59) 04/02/2020   02:13:41  ( -70.51, -36.55)    1.66                11
 04/02/2020   03:04:13   (  70.40, 130.92) 04/02/2020   03:03:08  (  70.41, 130.94)    1.16                65
 04/04/2020   17:39:22   (  71.13, -89.00) 04/04/2020   17:40:31  (  71.02, -87.53)   54.15                69
 04/04/2020   18:29:54   ( -70.51,  79.34) 04/04/2020   18:30:08  ( -70.53,  79.36)    2.50                14
 04/04/2020   19:20:38   (  70.44,-113.24) 04/04/2020   19:19:35  (  70.42,-113.16)    3.45                63
 04/07/2020   09:55:47   (  71.22,  26.75) 04/07/2020   09:56:55  (  71.14,  28.54)   64.81                68
 04/07/2020   10:46:18   ( -70.55,-164.82) 04/07/2020   10:46:34  ( -70.55,-164.74)    3.01                16
 04/07/2020   11:37:01   (  70.43,   2.69) 04/07/2020   11:36:01  (  70.43,   2.73)    1.90                60
 04/10/2020   02:12:13   (  71.31, 142.49) 04/10/2020   02:13:21  (  71.20, 144.52)   73.46                68
 04/10/2020   03:02:42   ( -70.54, -48.90) 04/10/2020   03:03:01  ( -70.56, -48.85)    2.55                19
 04/10/2020   03:53:25   (  70.42, 118.61) 04/10/2020   03:52:28  (  70.44, 118.63)    2.42                57
 04/12/2020   18:28:39   (  71.41,-101.77) 04/12/2020   18:29:46  (  71.32, -99.42)   84.16                67
 04/12/2020   19:19:06   ( -70.54,  67.02) 04/12/2020   19:19:28  ( -70.56,  67.04)    3.24                22
 04/12/2020   20:09:50   (  70.46,-125.56) 04/12/2020   20:08:55  (  70.44,-125.49)    3.39                55