Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2020   22:18:50   (  -0.01,-128.37) (  -0.86,-132.17)  433.47                80
 07/25/2020   22:02:33   (  -0.01,-128.37) (   0.15,-127.59)   89.09                80
 07/27/2020   10:24:03   (   0.01,-128.43) (   1.00,-132.78)  496.22                80
 07/28/2020   10:02:28   (   0.01,-128.43) (  -0.07,-128.21)   26.06                80
 07/30/2020   22:05:09   (  -0.02,-128.37) (  -0.14,-128.84)   54.06                80
 07/31/2020   21:48:52   (  -0.02,-128.37) (   0.87,-124.26)  467.74                80
 08/02/2020   10:10:24   (   0.02,-128.42) (   0.23,-129.47)  118.73                80
 08/03/2020   09:48:47   (   0.03,-128.41) (  -0.78,-124.88)  402.79                80
 08/04/2020   22:10:24   (  -0.03,-128.35) (  -0.43,-130.10)  199.75                80
 08/05/2020   21:54:08   (  -0.03,-128.34) (   0.59,-125.52)  321.78                80