Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2023   09:30:14   (   0.02,-104.71) (   0.64,-107.54)  322.02                80
 12/24/2023   09:09:07   (   0.02,-104.71) (  -0.37,-103.07)  188.51                80
 12/25/2023   21:31:29   (  -0.03,-104.68) (  -0.88,-108.44)  428.28                80
 12/26/2023   21:15:41   (  -0.03,-104.69) (   0.13,-103.96)   82.44                80
 12/29/2023   09:19:27   (   0.04,-104.74) (   0.06,-104.83)   10.80                80
 12/30/2023   08:58:20   (   0.04,-104.74) (  -0.95,-100.36)  499.93                80
 12/31/2023   21:20:42   (  -0.05,-104.71) (  -0.28,-105.73)  116.41                80
 01/01/2024   21:04:55   (  -0.05,-104.72) (   0.74,-101.26)  394.72                80
 01/03/2024   09:27:08   (   0.05,-104.77) (   0.45,-106.61)  208.35                80
 01/04/2024   09:06:00   (   0.05,-104.78) (  -0.58,-102.13)  302.70                80