Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/19/2023   14:24:43   (  -0.36, 172.72) (  -0.95, 175.45)  311.13                80
 07/21/2023   02:49:58   (   0.39, 171.15) (   0.10, 169.96)  136.78                80
 07/22/2023   02:28:59   (   0.37, 170.15) (   1.32, 174.36)  480.77                80
 07/23/2023   14:51:25   (  -0.39, 168.62) (  -0.43, 168.91)   33.20                80
 07/25/2023   03:16:41   (   0.42, 167.06) (  -0.41, 163.42)  415.30                80
 07/26/2023   02:55:41   (   0.40, 166.06) (   0.80, 167.83)  201.94                80
 07/27/2023   15:20:47   (  -0.43, 164.53) (   0.07, 162.37)  245.84                80
 07/28/2023   14:59:48   (  -0.41, 163.53) (  -1.15, 166.78)  370.68                80
 07/30/2023   03:25:03   (   0.44, 161.98) (   0.31, 161.28)   78.86                80
 08/01/2023   15:26:29   (  -0.45, 159.46) (  -0.61, 160.25)   89.45                80