Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 9 9.  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)
 09/11/2019   10:02:48   ( -70.46,-153.89) 09/11/2019   10:03:58  ( -70.47,-153.95)    2.37                70
 09/11/2019   10:53:32   (  70.34,  13.61) 09/11/2019   10:53:25  (  70.36,  13.54)    3.36                 7
 09/11/2019   11:44:10   ( -70.08,-178.67) 09/11/2019   11:42:57  ( -70.14,-179.14)   18.78                73
 09/14/2019   02:19:15   ( -70.54, -38.13) 09/14/2019   02:20:27  ( -70.49, -38.03)    6.12                72
 09/14/2019   03:09:58   (  70.37, 129.45) 09/14/2019   03:09:54  (  70.38, 129.45)    1.60                 4
 09/14/2019   04:00:38   ( -70.22, -62.99) 09/14/2019   03:59:25  ( -70.23, -63.14)    5.97                73
 09/16/2019   18:35:44   ( -70.67,  77.55) 09/16/2019   18:36:56  ( -70.59,  77.98)   18.42                72
 09/16/2019   19:26:24   (  70.35,-114.62) 09/16/2019   19:26:25  (  70.37,-114.70)    3.56                 1
 09/16/2019   20:17:06   ( -70.30,  52.78) 09/16/2019   20:15:55  ( -70.27,  52.79)    3.34                71
 09/19/2019   10:52:14   ( -70.85,-166.86) 09/19/2019   10:53:25  ( -70.69,-165.98)   36.90                71
 09/19/2019   11:42:51   (  70.38,   1.21) 09/19/2019   11:42:56  (  70.36,   1.17)    2.53                 5
 09/19/2019   12:33:32   ( -70.27, 168.70) 09/19/2019   12:32:26  ( -70.26, 168.66)    1.91                66
 09/22/2019   03:08:43   ( -70.99, -51.20) 09/22/2019   03:09:53  ( -70.86, -49.85)   50.86                70
 09/22/2019   03:59:17   (  70.36, 117.13) 09/22/2019   03:59:27  (  70.37, 117.05)    3.34                10
 09/22/2019   04:49:59   ( -70.30, -75.45) 09/22/2019   04:48:57  ( -70.27, -75.46)    3.10                62