Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 4 16.  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,  24.04) 04/20/2020   20:10:23  ( -79.49,  23.93)    2.13                71
 04/20/2020   21:02:19   (  79.49,-168.65) 04/20/2020   21:01:26  (  79.49,-168.78)    2.74                53
 04/20/2020   21:53:03   ( -79.48,  -1.31) 04/20/2020   21:52:23  ( -79.51,  -1.39)    2.92                40
 04/20/2020   22:43:49   (  79.52, 165.73) 04/20/2020   22:43:26  (  79.51, 165.90)    3.60                23
 04/20/2020   23:34:33   ( -79.51, -26.93) 04/20/2020   23:34:24  ( -79.49, -26.99)    2.34                 9
 04/21/2020   00:25:18   (  79.51, 140.38) 04/21/2020   00:25:27  (  79.50, 140.30)    2.10                 9
 04/21/2020   01:16:02   ( -79.51, -52.28) 04/21/2020   01:16:24  ( -79.51, -52.31)    0.62                22
 04/21/2020   02:06:46   (  79.51, 115.03) 04/21/2020   02:07:26  (  79.52, 114.99)    1.23                40
 04/21/2020   02:57:30   ( -79.51, -77.63) 04/21/2020   02:58:23  ( -79.53, -77.63)    2.54                53
 04/21/2020   03:48:15   (  79.51,  89.68) 04/21/2020   03:49:26  (  79.54,  89.67)    3.22                71