Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2020   22:04:39   (   0.03,-128.02) (   0.04,-128.03)    1.91                80
 08/18/2020   10:04:33   (  -0.03,-127.96) (   0.10,-128.64)   76.96                80
 08/19/2020   09:48:16   (  -0.03,-127.92) (  -0.91,-124.06)  440.97                80
 08/20/2020   22:07:14   (   0.04,-127.83) (  -0.29,-129.28)  165.30                80
 08/21/2020   21:50:57   (   0.03,-127.79) (   0.73,-124.69)  352.55                80
 08/23/2020   10:09:48   (  -0.04,-127.76) (   0.43,-129.89)  242.04                80
 08/24/2020   09:53:31   (  -0.03,-127.72) (  -0.59,-125.31)  275.42                80
 08/25/2020   22:12:28   (   0.04,-127.61) (  -0.61,-130.52)  331.99                80
 08/26/2020   21:56:12   (   0.04,-127.56) (   0.41,-125.94)  185.10                80