Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 14.  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)
 09/23/2021   22:14:44   ( -78.19,   4.14) 09/23/2021   22:13:34  ( -78.20,   4.00)    3.44                70
 09/23/2021   23:05:30   (  78.22, 171.29) 09/23/2021   23:04:38  (  78.21, 171.27)    1.30                52
 09/23/2021   23:56:14   ( -78.23, -21.47) 09/23/2021   23:55:34  ( -78.21, -21.44)    2.42                40
 09/24/2021   00:46:59   (  78.22, 145.90) 09/24/2021   00:46:38  (  78.22, 145.83)    1.78                21
 09/24/2021   01:37:43   ( -78.23, -46.86) 09/24/2021   01:37:34  ( -78.22, -46.89)    1.92                 9
 09/24/2021   02:28:27   (  78.22, 120.51) 09/24/2021   02:28:37  (  78.23, 120.38)    2.90                10
 09/24/2021   03:19:11   ( -78.24, -72.24) 09/24/2021   03:19:33  ( -78.23, -72.33)    2.34                22
 09/24/2021   04:09:57   (  78.27,  94.90) 09/24/2021   04:10:37  (  78.23,  94.94)    3.81                40
 09/24/2021   05:00:40   ( -78.24, -97.63) 09/24/2021   05:01:33  ( -78.24, -97.78)    3.34                53
 09/24/2021   05:51:26   (  78.27,  69.51) 09/24/2021   05:52:37  (  78.24,  69.50)    3.10                71