Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/19/2023   21:12:01   (  -0.01,-104.70) (  -0.44,-106.59)  214.76                80
 06/20/2023   20:56:18   (  -0.01,-104.71) (   0.57,-102.14)  292.91                80
 06/22/2023   09:18:41   (   0.00,-104.72) (   0.62,-107.52)  318.70                80
 06/23/2023   08:57:38   (   0.00,-104.72) (  -0.38,-103.07)  188.86                80
 06/24/2023   21:20:07   (   0.00,-104.71) (  -0.84,-108.48)  430.00                80
 06/25/2023   21:04:25   (   0.00,-104.71) (   0.16,-104.03)   78.00                80
 06/28/2023   09:08:24   (  -0.00,-104.74) (   0.07,-104.95)   25.05                80
 06/29/2023   08:47:21   (  -0.00,-104.74) (  -0.94,-100.50)  482.67                80
 06/30/2023   21:09:51   (   0.00,-104.72) (  -0.27,-105.92)  136.68                80
 07/01/2023   20:54:08   (   0.00,-104.72) (   0.75,-101.47)  370.87                80