Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2023   21:08:00   (  -0.01,-104.67) (   0.55,-102.19)  281.89                80
 12/23/2023   09:30:14   (   0.02,-104.70) (   0.66,-107.54)  322.79                80
 12/24/2023   09:09:06   (   0.02,-104.70) (  -0.34,-103.06)  187.35                80
 12/25/2023   21:31:29   (  -0.02,-104.67) (  -0.91,-108.43)  429.93                80
 12/26/2023   21:15:42   (  -0.02,-104.67) (   0.16,-103.97)   80.40                80
 12/29/2023   09:19:28   (   0.02,-104.71) (   0.03,-104.84)   14.23                80
 12/30/2023   08:58:20   (   0.01,-104.71) (  -0.98,-100.37)  496.12                80
 12/31/2023   21:20:43   (  -0.01,-104.68) (  -0.25,-105.74)  120.66                80
 01/01/2024   21:04:55   (  -0.00,-104.69) (   0.77,-101.27)  390.03                80
 01/03/2024   09:27:09   (   0.00,-104.74) (   0.42,-106.61)  213.74                80