Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 4 13.  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)
 04/14/2019   09:00:21   ( -70.63,-138.32) 04/14/2019   09:01:19  ( -70.65,-138.32)    2.74                58
 04/14/2019   09:51:05   (  70.53,  29.15) 04/14/2019   09:50:46  (  70.55,  29.17)    2.17                19
 04/14/2019   10:41:35   ( -69.83,-162.45) 04/14/2019   10:40:26  ( -69.89,-164.14)   65.02                69
 04/17/2019   01:16:49   ( -70.64, -22.45) 04/17/2019   01:17:47  ( -70.65, -22.44)    1.77                58
 04/17/2019   02:07:33   (  70.54, 145.01) 04/17/2019   02:07:14  (  70.54, 145.05)    1.30                19
 04/17/2019   02:58:03   ( -69.84, -46.59) 04/17/2019   02:56:54  ( -69.89, -48.26)   64.33                69
 04/19/2019   17:33:17   ( -70.65,  93.41) 04/19/2019   17:34:15  ( -70.65,  93.43)    1.10                58
 04/19/2019   18:24:01   (  70.55, -99.13) 04/19/2019   18:23:42  (  70.53, -99.09)    2.22                19
 04/19/2019   19:14:31   ( -69.85,  69.27) 04/19/2019   19:13:22  ( -69.88,  67.61)   63.77                69
 04/22/2019   09:49:44   ( -70.66,-150.74) 04/22/2019   09:50:42  ( -70.64,-150.70)    3.09                58
 04/22/2019   10:40:27   (  70.51,  16.82) 04/22/2019   10:40:09  (  70.52,  16.77)    2.02                18
 04/22/2019   11:30:58   ( -69.86,-174.87) 04/22/2019   11:29:48  ( -69.93,-176.45)   60.83                70
 04/25/2019   02:06:11   ( -70.62, -34.80) 04/25/2019   02:07:10  ( -70.62, -34.84)    1.71                59
 04/25/2019   02:56:55   (  70.53, 132.67) 04/25/2019   02:56:37  (  70.50, 132.63)    2.89                18