Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2023   08:49:32   (  -0.02,-104.72) (  -0.80,-101.18)  403.43                80
 06/19/2023   21:12:02   (   0.02,-104.71) (  -0.38,-106.60)  215.55                80
 06/20/2023   20:56:19   (   0.03,-104.71) (   0.63,-102.15)  292.14                80
 06/22/2023   09:18:41   (  -0.03,-104.73) (   0.62,-107.52)  319.41                80
 06/23/2023   08:57:38   (  -0.03,-104.73) (  -0.38,-103.07)  188.22                80
 06/24/2023   21:20:07   (   0.03,-104.71) (  -0.84,-108.48)  430.61                80
 06/25/2023   21:04:25   (   0.03,-104.71) (   0.16,-104.03)   77.48                80
 06/28/2023   09:08:25   (  -0.04,-104.74) (   0.01,-104.97)   25.54                80
 06/29/2023   08:47:22   (  -0.04,-104.74) (  -1.00,-100.52)  482.01                80
 06/30/2023   21:09:52   (   0.05,-104.72) (  -0.21,-105.93)  137.48                80
 07/01/2023   20:54:09   (   0.05,-104.72) (   0.80,-101.48)  370.00                80