Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2019 12 10.  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)
 12/19/2019   22:22:56   ( -79.77, -11.27) 12/19/2019   22:21:44  ( -79.75, -11.21)    2.57                72
 12/19/2019   23:13:41   (  79.77, 156.03) 12/19/2019   23:12:48  (  79.75, 156.07)    2.26                53
 12/20/2019   00:04:25   ( -79.76, -36.61) 12/20/2019   00:03:44  ( -79.76, -36.50)    2.11                41
 12/20/2019   00:55:10   (  79.76, 130.69) 12/20/2019   00:54:48  (  79.77, 130.78)    1.88                22
 12/20/2019   01:45:54   ( -79.76, -61.95) 12/20/2019   01:45:45  ( -79.76, -62.09)    2.84                 9
 12/20/2019   02:36:39   (  79.76, 105.35) 12/20/2019   02:36:49  (  79.76, 105.19)    3.02                10
 12/20/2019   03:27:23   ( -79.76, -87.29) 12/20/2019   03:27:45  ( -79.77, -87.38)    2.77                22
 12/20/2019   04:18:08   (  79.76,  80.01) 12/20/2019   04:18:49  (  79.78,  79.91)    3.08                41
 12/20/2019   05:08:53   ( -79.78,-112.91) 12/20/2019   05:09:46  ( -79.77,-112.97)    2.16                53
 12/20/2019   05:59:38   (  79.79,  54.38) 12/20/2019   06:00:50  (  79.77,  54.32)    1.94                72