Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 11.  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   06:59:18   ( -78.92,-133.10) 12/23/2020   06:58:10  ( -78.91,-133.05)    1.63                68
 12/23/2020   07:50:02   (  78.90,  34.39) 12/23/2020   07:49:10  (  78.93,  34.32)    3.59                52
 12/23/2020   08:40:47   ( -78.92,-158.47) 12/23/2020   08:40:10  ( -78.93,-158.44)    0.71                37
 12/23/2020   09:31:32   (  78.93,   8.78) 12/23/2020   09:31:11  (  78.91,   8.68)    3.39                21
 12/23/2020   10:22:16   ( -78.92, 176.16) 12/23/2020   10:22:10  ( -78.94, 176.18)    2.01                 6
 12/23/2020   11:13:01   (  78.93, -16.59) 12/23/2020   11:13:11  (  78.92, -16.70)    2.46                10
 12/23/2020   12:03:45   ( -78.92, 150.79) 12/23/2020   12:04:10  ( -78.96, 150.79)    3.63                25
 12/23/2020   12:54:30   (  78.93, -41.96) 12/23/2020   12:55:11  (  78.94, -42.08)    2.56                41
 12/23/2020   13:45:15   ( -78.96, 125.18) 12/23/2020   13:46:11  ( -78.94, 125.15)    2.43                56
 12/23/2020   14:36:00   (  78.97, -67.58) 12/23/2020   14:37:11  (  78.95, -67.46)    3.04                71