Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 1 9.  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)
 01/19/2021   16:56:04   ( -78.84,  78.36) 01/19/2021   16:54:52  ( -78.83,  78.24)    3.04                72
 01/19/2021   17:46:49   (  78.83,-114.25) 01/19/2021   17:45:56  (  78.86,-114.28)    3.59                53
 01/19/2021   18:37:33   ( -78.84,  52.99) 01/19/2021   18:36:52  ( -78.84,  52.85)    2.96                41
 01/19/2021   19:28:19   (  78.87,-139.86) 01/19/2021   19:27:57  (  78.84,-139.92)    2.87                22
 01/19/2021   20:19:03   ( -78.88,  27.37) 01/19/2021   20:18:52  ( -78.86,  27.46)    3.05                11
 01/19/2021   21:09:48   (  78.87,-165.24) 01/19/2021   21:09:57  (  78.86,-165.31)    1.80                 9
 01/19/2021   22:00:32   ( -78.88,   2.00) 01/19/2021   22:00:52  ( -78.87,   2.07)    1.75                20
 01/19/2021   22:51:17   (  78.87, 169.39) 01/19/2021   22:51:57  (  78.87, 169.31)    1.91                40
 01/19/2021   23:42:01   ( -78.88, -23.37) 01/19/2021   23:42:52  ( -78.89, -23.31)    1.49                51
 01/20/2021   00:32:45   (  78.87, 144.02) 01/20/2021   00:33:56  (  78.89, 143.92)    3.07                71