Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 17.  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   ( -78.93,-133.12) 12/23/2020   06:58:10  ( -78.91,-133.05)    2.01                68
 12/23/2020   07:50:03   (  78.93,  34.16) 12/23/2020   07:49:11  (  78.90,  34.09)    3.91                52
 12/23/2020   08:40:47   ( -78.92,-158.48) 12/23/2020   08:40:10  ( -78.93,-158.43)    1.19                37
 12/23/2020   09:31:32   (  78.93,   8.79) 12/23/2020   09:31:11  (  78.91,   8.71)    2.50                21
 12/23/2020   10:22:16   ( -78.92, 176.15) 12/23/2020   10:22:10  ( -78.94, 176.19)    2.15                 6
 12/23/2020   11:13:01   (  78.93, -16.58) 12/23/2020   11:13:11  (  78.93, -16.67)    1.85                10
 12/23/2020   12:03:45   ( -78.92, 150.78) 12/23/2020   12:04:10  ( -78.96, 150.80)    3.69                25
 12/23/2020   12:54:30   (  78.93, -41.95) 12/23/2020   12:55:11  (  78.94, -42.05)    2.60                41
 12/23/2020   13:45:15   ( -78.96, 125.16) 12/23/2020   13:46:11  ( -78.94, 125.16)    2.30                56
 12/23/2020   14:36:00   (  78.97, -67.56) 12/23/2020   14:37:11  (  78.96, -67.42)    3.07                71