Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 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)
 07/30/2022   11:08:56   (   0.06,-137.30) (   0.43,-139.05)  199.88                80
 07/31/2022   10:47:51   (   0.06,-137.30) (  -0.54,-134.59)  308.61                80
 08/01/2022   23:11:26   (  -0.06,-137.30) (  -0.66,-140.00)  308.23                12
 08/02/2022   22:51:52   (  -0.06,-137.30) (   0.31,-135.54)  199.97                80
 08/04/2022   11:16:50   (   0.05,-137.30) (   0.89,-140.91)  412.56                80
 08/05/2022   10:55:45   (   0.05,-137.29) (  -0.15,-136.46)   95.04                80
 08/07/2022   22:59:47   (  -0.04,-137.26) (  -0.07,-137.41)   16.76                80
 08/08/2022   22:44:03   (  -0.04,-137.25) (   0.96,-132.96)  489.89                80
 08/10/2022   11:03:39   (   0.03,-137.23) (   0.29,-138.32)  124.86                80
 08/11/2022   10:47:54   (   0.03,-137.21) (  -0.74,-133.87)  381.43                80
 08/12/2022   23:07:41   (  -0.01,-137.18) (  -0.50,-139.27)  238.79                80