Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/18/2023   14:45:43   (  -0.38, 173.72) (   0.23, 171.04)  306.00                80
 07/19/2023   14:24:44   (  -0.36, 172.72) (  -0.98, 175.44)  310.98                80
 07/21/2023   02:49:59   (   0.39, 171.16) (   0.14, 169.95)  137.56                80
 07/22/2023   02:29:00   (   0.37, 170.16) (   1.35, 174.36)  479.73                80
 07/23/2023   14:51:26   (  -0.39, 168.63) (  -0.46, 168.91)   31.82                80
 07/25/2023   03:16:41   (   0.42, 167.08) (  -0.38, 163.41)  417.18                80
 07/26/2023   02:55:41   (   0.40, 166.07) (   0.78, 167.83)  199.81                80
 07/27/2023   15:20:48   (  -0.43, 164.55) (   0.04, 162.37)  248.21                80
 07/28/2023   14:59:48   (  -0.41, 163.55) (  -1.12, 166.79)  368.07                80
 07/30/2023   03:25:03   (   0.44, 162.01) (   0.28, 161.29)   82.06                80