Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 15.  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,-132.91) 12/23/2020   06:58:10  ( -78.92,-132.99)    3.25                67
 12/23/2020   07:50:02   (  78.90,  34.35) 12/23/2020   07:49:10  (  78.94,  34.39)    3.85                52
 12/23/2020   08:40:47   ( -78.93,-158.52) 12/23/2020   08:40:10  ( -78.93,-158.38)    3.12                37
 12/23/2020   09:31:32   (  78.94,   8.74) 12/23/2020   09:31:11  (  78.92,   8.75)    2.21                21
 12/23/2020   10:22:16   ( -78.93, 176.11) 12/23/2020   10:22:11  ( -78.92, 175.98)    3.14                 5
 12/23/2020   11:13:01   (  78.94, -16.63) 12/23/2020   11:13:11  (  78.93, -16.62)    0.49                10
 12/23/2020   12:03:45   ( -78.93, 150.74) 12/23/2020   12:04:11  ( -78.93, 150.60)    2.96                26
 12/23/2020   12:54:30   (  78.94, -42.00) 12/23/2020   12:55:11  (  78.95, -42.00)    1.26                41
 12/23/2020   13:45:15   ( -78.97, 125.12) 12/23/2020   13:46:11  ( -78.95, 125.22)    3.08                56
 12/23/2020   14:35:59   (  78.94, -67.37) 12/23/2020   14:37:11  (  78.97, -67.38)    2.98                72