Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/20/2023   21:04:09   (  -0.02,-104.68) (   0.44,-102.72)  223.93                80
 09/22/2023   09:26:28   (   0.02,-104.71) (   0.77,-108.09)  384.55                80
 09/23/2023   09:05:23   (   0.01,-104.71) (  -0.23,-103.62)  123.26                80
 09/24/2023   21:27:50   (   0.02,-104.66) (  -0.98,-109.03)  497.91                80
 09/25/2023   21:12:06   (   0.02,-104.66) (   0.02,-104.57)   10.57                80
 09/28/2023   09:16:00   (  -0.01,-104.69) (   0.17,-105.47)   88.80                80
 09/29/2023   08:54:55   (  -0.00,-104.69) (  -0.84,-101.01)  419.72                80
 09/30/2023   21:17:22   (   0.00,-104.65) (  -0.40,-106.41)  200.05                80
 10/01/2023   21:01:37   (  -0.00,-104.65) (   0.62,-101.95)  308.77                80
 10/03/2023   09:23:55   (   0.01,-104.69) (   0.58,-107.31)  298.57                80