Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 4 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)
 04/20/2020   20:11:34   ( -79.49,  24.03) 04/20/2020   20:10:23  ( -79.49,  23.92)    2.23                71
 04/20/2020   21:02:19   (  79.49,-168.69) 04/20/2020   21:01:26  (  79.49,-168.82)    2.63                53
 04/20/2020   21:53:03   ( -79.48,  -1.31) 04/20/2020   21:52:23  ( -79.50,  -1.40)    2.85                40
 04/20/2020   22:43:48   (  79.49, 165.96) 04/20/2020   22:43:26  (  79.51, 165.86)    2.82                22
 04/20/2020   23:34:33   ( -79.51, -26.94) 04/20/2020   23:34:24  ( -79.49, -27.00)    2.54                 9
 04/21/2020   00:25:18   (  79.52, 140.34) 04/21/2020   00:25:27  (  79.50, 140.26)    2.86                 9
 04/21/2020   01:16:02   ( -79.51, -52.29) 04/21/2020   01:16:24  ( -79.51, -52.32)    0.69                22
 04/21/2020   02:06:47   (  79.52, 114.99) 04/21/2020   02:07:27  (  79.51, 114.95)    0.82                40
 04/21/2020   02:57:31   ( -79.51, -77.64) 04/21/2020   02:58:24  ( -79.53, -77.64)    2.38                53
 04/21/2020   03:48:16   (  79.51,  89.64) 04/21/2020   03:49:27  (  79.53,  89.63)    2.22                71