Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 4 17.  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)
 04/20/2020   20:11:34   ( -79.49,  23.97) 04/20/2020   20:10:23  ( -79.48,  23.84)    3.09                71
 04/20/2020   21:02:19   (  79.49,-168.71) 04/20/2020   21:01:26  (  79.48,-168.87)    3.32                53
 04/20/2020   21:53:03   ( -79.49,  -1.38) 04/20/2020   21:52:23  ( -79.50,  -1.48)    2.06                40
 04/20/2020   22:43:48   (  79.49, 165.94) 04/20/2020   22:43:26  (  79.50, 165.82)    2.79                22
 04/20/2020   23:34:32   ( -79.49, -26.73) 04/20/2020   23:34:23  ( -79.51, -26.80)    3.18                 9
 04/21/2020   00:25:18   (  79.52, 140.32) 04/21/2020   00:25:26  (  79.52, 140.50)    3.72                 8
 04/21/2020   01:16:02   ( -79.52, -52.35) 04/21/2020   01:16:24  ( -79.50, -52.40)    1.95                22
 04/21/2020   02:06:47   (  79.52, 114.97) 04/21/2020   02:07:27  (  79.51, 114.90)    1.63                40
 04/21/2020   02:57:31   ( -79.52, -77.70) 04/21/2020   02:58:24  ( -79.52, -77.72)    0.77                53
 04/21/2020   03:48:16   (  79.52,  89.62) 04/21/2020   03:49:27  (  79.53,  89.58)    1.61                71