Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/30/2023   09:20:03   (   0.01,-104.73) (   0.59,-107.32)  294.87                80
 07/31/2023   08:59:00   (   0.01,-104.73) (  -0.40,-102.86)  212.74                80
 08/01/2023   21:21:28   (  -0.02,-104.69) (  -0.86,-108.26)  408.14                80
 08/02/2023   21:05:46   (  -0.02,-104.69) (   0.19,-103.82)   99.88                80
 08/05/2023   09:07:02   (   0.03,-104.73) (   0.01,-104.74)    2.20                80
 08/07/2023   21:11:07   (  -0.03,-104.69) (  -0.27,-105.68)  113.12                80
 08/08/2023   20:55:24   (  -0.03,-104.69) (   0.73,-101.22)  395.17                80
 08/10/2023   09:17:44   (   0.04,-104.74) (   0.45,-106.60)  212.70                80
 08/11/2023   08:56:41   (   0.04,-104.74) (  -0.55,-102.15)  295.29                80
 08/12/2023   21:19:09   (  -0.04,-104.69) (  -0.70,-107.55)  325.80                80