Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 7 25.  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)
 07/30/2021   21:17:44   ( -78.36,  17.06) 07/30/2021   21:16:38  ( -78.35,  16.99)    1.81                66
 07/30/2021   22:08:28   (  78.34,-175.55) 07/30/2021   22:07:32  (  78.35,-175.71)    3.63                56
 07/30/2021   22:59:13   ( -78.36,  -8.33) 07/30/2021   22:58:38  ( -78.36,  -8.44)    2.53                35
 07/30/2021   23:49:58   (  78.39, 158.84) 07/30/2021   23:49:32  (  78.36, 158.85)    2.92                26
 07/31/2021   00:40:42   ( -78.36, -33.71) 07/31/2021   00:40:38  ( -78.37, -33.87)    3.64                 4
 07/31/2021   01:31:27   (  78.39, 133.45) 07/31/2021   01:31:32  (  78.37, 133.42)    2.16                 5
 07/31/2021   02:22:12   ( -78.40, -59.32) 07/31/2021   02:22:38  ( -78.38, -59.30)    2.82                26
 07/31/2021   03:12:56   (  78.39, 108.07) 07/31/2021   03:13:32  (  78.38, 107.99)    2.13                36
 07/31/2021   04:03:41   ( -78.40, -84.70) 07/31/2021   04:04:38  ( -78.39, -84.74)    2.07                57
 07/31/2021   04:54:25   (  78.39,  82.68) 07/31/2021   04:55:32  (  78.39,  82.56)    2.84                67