Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 22.  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,-133.07) 12/23/2020   06:58:10  ( -78.92,-132.95)    2.64                68
 12/23/2020   07:50:03   (  78.92,  34.24) 12/23/2020   07:49:11  (  78.91,  34.19)    1.27                52
 12/23/2020   08:40:47   ( -78.92,-158.44) 12/23/2020   08:40:10  ( -78.94,-158.34)    3.30                37
 12/23/2020   09:31:32   (  78.92,   8.87) 12/23/2020   09:31:11  (  78.93,   8.81)    1.61                21
 12/23/2020   10:22:16   ( -78.92, 176.19) 12/23/2020   10:22:11  ( -78.92, 176.02)    3.62                 5
 12/23/2020   11:13:01   (  78.92, -16.50) 12/23/2020   11:13:11  (  78.94, -16.57)    3.12                10
 12/23/2020   12:03:46   ( -78.95, 150.58) 12/23/2020   12:04:11  ( -78.94, 150.64)    2.29                25
 12/23/2020   12:54:30   (  78.95, -42.11) 12/23/2020   12:55:10  (  78.96, -41.94)    3.59                40
 12/23/2020   13:45:14   ( -78.95, 125.21) 12/23/2020   13:46:10  ( -78.95, 125.26)    1.06                56
 12/23/2020   14:35:59   (  78.95, -67.48) 12/23/2020   14:37:11  (  78.94, -67.58)    2.58                72