Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 5 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/16/2023   08:56:13   (   0.01,-104.73) (  -0.33,-103.25)  168.42                80
 05/17/2023   21:18:41   (  -0.01,-104.72) (  -0.90,-108.66)  448.69                80
 05/18/2023   21:02:57   (  -0.01,-104.73) (   0.13,-104.20)   59.87                80
 05/21/2023   09:06:52   (   0.01,-104.74) (   0.11,-105.11)   42.92                80
 05/22/2023   08:45:49   (   0.00,-104.74) (  -0.92,-100.66)  465.21                80
 05/23/2023   21:08:17   (  -0.00,-104.73) (  -0.29,-106.07)  152.22                80
 05/24/2023   20:52:33   (   0.00,-104.73) (   0.69,-101.60)  356.32                80
 05/26/2023   09:14:52   (  -0.00,-104.75) (   0.51,-106.98)  254.15                80
 05/27/2023   08:53:48   (  -0.01,-104.75) (  -0.52,-102.53)  254.26                80
 05/28/2023   21:16:16   (   0.00,-104.74) (  -0.72,-107.93)  362.98                80
 05/29/2023   21:00:31   (   0.00,-104.75) (   0.27,-103.46)  145.96                80