Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 5 4.  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)
 05/05/2019   19:12:00   ( -70.64,  68.70) 05/05/2019   19:13:10  ( -70.64,  68.77)    2.36                70
 05/05/2019   20:02:44   (  70.52,-123.80) 05/05/2019   20:02:37  (  70.53,-123.75)    2.16                 7
 05/05/2019   20:53:22   ( -70.26,  43.93) 05/05/2019   20:52:09  ( -70.32,  43.57)   14.61                73
 05/08/2019   11:28:29   ( -70.72,-175.54) 05/08/2019   11:29:41  ( -70.68,-175.29)    9.78                72
 05/08/2019   12:19:11   (  70.50,  -7.87) 05/08/2019   12:19:09  (  70.52,  -7.89)    2.64                 2
 05/08/2019   13:09:52   ( -70.39, 159.61) 05/08/2019   13:08:39  ( -70.42, 159.59)    2.74                73
 05/11/2019   03:45:00   ( -70.90, -59.96) 05/11/2019   03:46:11  ( -70.81, -59.23)   28.31                71
 05/11/2019   04:35:39   (  70.52, 107.96) 05/11/2019   04:35:41  (  70.54, 108.00)    2.20                 2
 05/11/2019   05:26:20   ( -70.42, -84.55) 05/11/2019   05:25:11  ( -70.44, -84.51)    2.88                69
 05/13/2019   20:01:31   ( -71.08,  55.62) 05/13/2019   20:02:41  ( -70.97,  56.89)   47.59                70
 05/13/2019   20:52:07   (  70.55,-136.21) 05/13/2019   20:52:14  (  70.54,-136.13)    3.40                 7
 05/13/2019   21:42:48   ( -70.45,  31.29) 05/13/2019   21:41:44  ( -70.44,  31.36)    2.71                64
 05/16/2019   12:18:02   ( -71.32, 171.09) 05/16/2019   12:19:10  ( -71.17, 173.06)   72.36                68
 05/16/2019   13:08:33   (  70.54, -20.29) 05/16/2019   13:08:47  (  70.51, -20.31)    2.73                14
 05/16/2019   13:59:14   ( -70.42, 147.21) 05/16/2019   13:58:17  ( -70.42, 147.19)    0.75                57