Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2019 4 13.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2019   14:33:08   ( -80.19, 102.33) 04/18/2019   14:31:53  ( -80.19, 102.17)    3.01                75
 04/18/2019   15:23:53   (  80.19, -90.35) 04/18/2019   15:22:58  (  80.20, -90.44)    1.82                55
 04/18/2019   16:14:37   ( -80.19,  77.01) 04/18/2019   16:13:53  ( -80.21,  76.96)    2.20                44
 04/18/2019   17:05:23   (  80.22,-115.98) 04/18/2019   17:04:59  (  80.20,-115.98)    2.23                24
 04/18/2019   17:56:07   ( -80.21,  51.39) 04/18/2019   17:55:54  ( -80.20,  51.43)    1.07                13
 04/18/2019   18:46:52   (  80.21,-141.30) 04/18/2019   18:46:59  (  80.21,-141.19)    2.03                 7
 04/18/2019   19:37:36   ( -80.21,  26.07) 04/18/2019   19:37:54  ( -80.22,  26.22)    3.32                18
 04/18/2019   20:28:21   (  80.21,-166.61) 04/18/2019   20:29:00  (  80.21,-166.73)    2.27                39
 04/18/2019   21:19:05   ( -80.20,   0.75) 04/18/2019   21:19:55  ( -80.22,   0.68)    2.56                50
 04/18/2019   22:09:51   (  80.23, 167.76) 04/18/2019   22:11:01  (  80.21, 167.74)    2.08                70