Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2019 4 12.  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   ( -80.21, 102.17) 04/18/2019   14:31:52  ( -80.20, 102.34)    3.25                76
 04/18/2019   15:23:53   (  80.21, -90.52) 04/18/2019   15:22:58  (  80.19, -90.61)    2.96                55
 04/18/2019   16:14:37   ( -80.20,  76.86) 04/18/2019   16:13:53  ( -80.20,  76.80)    1.28                44
 04/18/2019   17:05:22   (  80.20,-115.83) 04/18/2019   17:04:58  (  80.21,-115.82)    0.37                24
 04/18/2019   17:56:06   ( -80.20,  51.54) 04/18/2019   17:55:53  ( -80.21,  51.59)    2.12                13
 04/18/2019   18:46:52   (  80.23,-141.46) 04/18/2019   18:46:59  (  80.20,-141.36)    3.09                 7
 04/18/2019   19:37:36   ( -80.22,  25.91) 04/18/2019   19:37:54  ( -80.21,  26.05)    2.77                18
 04/18/2019   20:28:21   (  80.22,-166.78) 04/18/2019   20:29:00  (  80.20,-166.90)    3.09                39
 04/18/2019   21:19:05   ( -80.22,   0.60) 04/18/2019   21:19:55  ( -80.21,   0.52)    1.60                50
 04/18/2019   22:09:50   (  80.22, 167.91) 04/18/2019   22:11:00  (  80.22, 167.89)    0.54                70