Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2023   09:22:32   (   0.00,-104.69) (   0.26,-105.76)  121.98                80
 12/19/2023   09:01:25   (  -0.01,-104.69) (  -0.79,-101.30)  388.06                80
 12/20/2023   21:23:48   (   0.01,-104.67) (  -0.46,-106.67)  228.53                80
 12/21/2023   21:08:01   (   0.01,-104.67) (   0.59,-102.20)  282.02                80
 12/23/2023   09:30:13   (   0.02,-104.71) (   0.68,-107.53)  322.30                80
 12/24/2023   09:09:07   (   0.02,-104.71) (  -0.38,-103.07)  188.19                80
 12/25/2023   21:31:29   (  -0.02,-104.68) (  -0.87,-108.44)  428.76                80
 12/26/2023   21:15:42   (  -0.02,-104.68) (   0.13,-103.97)   81.61                80
 12/29/2023   09:19:28   (   0.01,-104.73) (   0.06,-104.83)   13.00                80
 12/30/2023   08:58:21   (   0.01,-104.73) (  -1.01,-100.37)  497.63                80
 12/31/2023   21:23:23   (  -0.00,-104.70) (  -0.23,-105.75)  118.82                80