Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 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)
 12/23/2020   06:59:17   ( -78.91,-133.01) 12/23/2020   06:58:10  ( -78.90,-133.14)    2.93                67
 12/23/2020   07:50:02   (  78.92,  34.23) 12/23/2020   07:49:10  (  78.92,  34.23)    0.66                52
 12/23/2020   08:40:46   ( -78.91,-158.38) 12/23/2020   08:40:10  ( -78.92,-158.52)    3.05                36
 12/23/2020   09:31:31   (  78.92,   8.86) 12/23/2020   09:31:10  (  78.93,   8.85)    1.08                21
 12/23/2020   10:22:16   ( -78.95, 176.00) 12/23/2020   10:22:10  ( -78.93, 176.09)    2.67                 6
 12/23/2020   11:13:00   (  78.92, -16.51) 12/23/2020   11:13:10  (  78.95, -16.53)    2.80                10
 12/23/2020   12:03:45   ( -78.95, 150.63) 12/23/2020   12:04:10  ( -78.94, 150.71)    1.65                25
 12/23/2020   12:54:30   (  78.96, -42.13) 12/23/2020   12:55:11  (  78.93, -42.16)    3.29                41
 12/23/2020   13:45:14   ( -78.95, 125.26) 12/23/2020   13:46:10  ( -78.96, 125.33)    1.97                56
 12/23/2020   14:35:59   (  78.96, -67.49) 12/23/2020   14:37:11  (  78.94, -67.54)    1.81                72