Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 12 3.  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)
 12/03/2021   05:32:00   (  78.02,  76.28) 12/03/2021   05:31:28  (  78.03,  76.15)    3.22                32
 12/03/2021   06:22:46   ( -78.07,-116.64) 12/03/2021   06:22:34  ( -78.03,-116.63)    3.68                12
 12/03/2021   07:13:32   (  78.04,  50.79) 12/03/2021   07:13:28  (  78.04,  50.69)    2.44                 4
 12/03/2021   08:04:17   ( -78.05,-141.91) 12/03/2021   08:04:33  ( -78.08,-141.87)    3.60                16
 12/03/2021   08:55:04   (  78.06,  25.31) 12/03/2021   08:55:28  (  78.05,  25.23)    2.58                24
 12/03/2021   09:45:49   ( -78.07,-167.39) 12/03/2021   09:46:33  ( -78.08,-167.33)    2.54                44
 12/03/2021   10:36:36   (  78.08,  -0.18) 12/03/2021   10:37:28  (  78.05,  -0.23)    3.51                52
 12/03/2021   11:27:21   ( -78.09, 167.12) 12/03/2021   11:28:33  ( -78.09, 167.21)    2.18                72