Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 1 11.  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   ( -78.85,  78.31) 01/19/2021   16:54:51  ( -78.86,  78.45)    3.13                73
 01/19/2021   17:46:49   (  78.84,-114.29) 01/19/2021   17:45:56  (  78.86,-114.31)    2.45                53
 01/19/2021   18:37:33   ( -78.85,  52.94) 01/19/2021   18:36:52  ( -78.84,  52.81)    3.02                41
 01/19/2021   19:28:19   (  78.87,-139.91) 01/19/2021   19:27:57  (  78.84,-139.95)    3.83                22
 01/19/2021   20:19:02   ( -78.85,  27.57) 01/19/2021   20:18:52  ( -78.85,  27.42)    3.10                10
 01/19/2021   21:09:48   (  78.87,-165.28) 01/19/2021   21:09:57  (  78.86,-165.33)    2.43                 9
 01/19/2021   22:00:32   ( -78.89,   1.95) 01/19/2021   22:00:52  ( -78.87,   2.04)    2.74                20
 01/19/2021   22:51:17   (  78.87, 169.35) 01/19/2021   22:51:57  (  78.87, 169.28)    1.60                40
 01/19/2021   23:42:01   ( -78.89, -23.42) 01/19/2021   23:42:52  ( -78.88, -23.35)    1.54                51
 01/20/2021   00:32:46   (  78.87, 143.98) 01/20/2021   00:33:57  (  78.88, 143.89)    2.16                71