Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 8 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)
 08/21/2020   23:03:41   ( -79.21, -16.61) 08/21/2020   23:02:31  ( -79.22, -16.58)    0.92                70
 08/21/2020   23:54:26   (  79.22, 150.66) 08/21/2020   23:53:33  (  79.21, 150.61)    1.33                53
 08/22/2020   00:45:10   ( -79.21, -41.96) 08/22/2020   00:44:31  ( -79.24, -41.94)    2.79                39
 08/22/2020   01:35:55   (  79.22, 125.30) 08/22/2020   01:35:33  (  79.23, 125.25)    1.72                22
 08/22/2020   02:26:40   ( -79.25, -67.58) 08/22/2020   02:26:32  ( -79.22, -67.56)    2.55                 8
 08/22/2020   03:17:24   (  79.22,  99.95) 08/22/2020   03:17:33  (  79.25,  99.90)    3.53                 9
 08/22/2020   04:08:09   ( -79.24, -92.94) 08/22/2020   04:08:32  ( -79.24, -92.92)    0.65                23
 08/22/2020   04:58:54   (  79.25,  74.33) 08/22/2020   04:59:34  (  79.23,  74.28)    2.09                40
 08/22/2020   05:49:38   ( -79.24,-118.30) 08/22/2020   05:50:32  ( -79.26,-118.28)    1.49                54
 08/22/2020   06:40:23   (  79.25,  48.97) 08/22/2020   06:41:34  (  79.25,  48.93)    0.98                71