Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 18.  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   ( -78.90,-132.94) 12/23/2020   06:58:10  ( -78.90,-133.11)    3.63                67
 12/23/2020   07:50:02   (  78.90,  34.34) 12/23/2020   07:49:10  (  78.92,  34.29)    2.34                52
 12/23/2020   08:40:47   ( -78.94,-158.56) 12/23/2020   08:40:10  ( -78.92,-158.49)    2.24                37
 12/23/2020   09:31:32   (  78.94,   8.72) 12/23/2020   09:31:10  (  78.94,   8.91)    3.97                22
 12/23/2020   10:22:16   ( -78.94, 176.07) 12/23/2020   10:22:10  ( -78.93, 176.12)    1.02                 6
 12/23/2020   11:13:01   (  78.94, -16.65) 12/23/2020   11:13:11  (  78.92, -16.73)    2.72                10
 12/23/2020   12:03:45   ( -78.93, 150.71) 12/23/2020   12:04:10  ( -78.95, 150.74)    1.70                25
 12/23/2020   12:54:30   (  78.94, -42.02) 12/23/2020   12:55:11  (  78.94, -42.11)    1.98                41
 12/23/2020   13:45:14   ( -78.93, 125.34) 12/23/2020   13:46:10  ( -78.96, 125.36)    3.24                56
 12/23/2020   14:35:59   (  78.94, -67.38) 12/23/2020   14:37:11  (  78.95, -67.49)    2.56                72