Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/13/2020   10:01:57   (  -0.02,-128.14) (  -0.16,-127.38)   85.72                80
 08/15/2020   22:04:39   (   0.03,-128.02) (   0.03,-128.03)    1.63                80
 08/18/2020   10:04:33   (  -0.03,-127.96) (   0.11,-128.64)   77.04                80
 08/19/2020   09:48:16   (  -0.03,-127.92) (  -0.90,-124.06)  440.85                80
 08/20/2020   22:07:14   (   0.04,-127.82) (  -0.30,-129.27)  165.52                80
 08/21/2020   21:50:57   (   0.03,-127.78) (   0.72,-124.69)  352.31                80
 08/23/2020   10:09:48   (  -0.04,-127.76) (   0.44,-129.89)  242.26                80
 08/24/2020   09:53:31   (  -0.03,-127.72) (  -0.58,-125.30)  275.18                80
 08/25/2020   22:12:28   (   0.04,-127.61) (  -0.62,-130.52)  332.34                80
 08/26/2020   21:56:12   (   0.04,-127.56) (   0.40,-125.94)  184.73                80