Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 19.  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   22:14:45   ( -78.23,   3.92) 09/23/2021   22:13:34  ( -78.20,   3.97)    3.81                71
 09/23/2021   23:05:30   (  78.22, 171.30) 09/23/2021   23:04:38  (  78.20, 171.25)    1.71                52
 09/23/2021   23:56:14   ( -78.23, -21.47) 09/23/2021   23:55:34  ( -78.20, -21.48)    3.07                40
 09/24/2021   00:46:59   (  78.22, 145.92) 09/24/2021   00:46:38  (  78.21, 145.81)    2.51                21
 09/24/2021   01:37:43   ( -78.24, -46.86) 09/24/2021   01:37:34  ( -78.21, -46.92)    2.90                 9
 09/24/2021   02:28:27   (  78.22, 120.53) 09/24/2021   02:28:37  (  78.22, 120.36)    3.67                10
 09/24/2021   03:19:11   ( -78.24, -72.25) 09/24/2021   03:19:32  ( -78.26, -72.14)    3.22                21
 09/24/2021   04:09:57   (  78.26,  94.92) 09/24/2021   04:10:37  (  78.23,  94.92)    3.75                40
 09/24/2021   05:00:40   ( -78.24, -97.64) 09/24/2021   05:01:32  ( -78.27, -97.59)    2.98                52
 09/24/2021   05:51:26   (  78.27,  69.53) 09/24/2021   05:52:37  (  78.24,  69.48)    3.33                71