Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/17/2023   02:20:37   (   0.35, 175.25) (   0.66, 176.49)  142.06                80
 07/18/2023   14:45:43   (  -0.38, 173.72) (   0.24, 171.04)  305.86                80
 07/19/2023   14:24:43   (  -0.36, 172.72) (  -0.97, 175.45)  311.19                80
 07/21/2023   02:49:59   (   0.39, 171.16) (   0.12, 169.95)  137.30                80
 07/22/2023   02:28:59   (   0.37, 170.15) (   1.33, 174.36)  480.01                80
 07/23/2023   14:51:26   (  -0.39, 168.62) (  -0.45, 168.91)   32.27                80
 07/25/2023   03:16:41   (   0.42, 167.07) (  -0.40, 163.42)  416.70                80
 07/26/2023   02:55:41   (   0.40, 166.07) (   0.82, 167.82)  200.33                80
 07/27/2023   15:20:48   (  -0.43, 164.54) (   0.06, 162.37)  247.54                80
 07/28/2023   14:59:48   (  -0.41, 163.54) (  -1.16, 166.78)  368.78                80
 07/30/2023   03:25:03   (   0.44, 162.00) (   0.26, 161.29)   81.34                80