Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 15.  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   22:01:59   (   0.03,-128.02) (   0.02,-128.02)    1.04                80
 08/18/2020   10:04:33   (  -0.04,-127.96) (   0.12,-128.64)   76.78                80
 08/19/2020   09:48:16   (  -0.03,-127.93) (  -0.90,-124.05)  441.17                80
 08/20/2020   22:07:13   (   0.04,-127.83) (  -0.30,-129.27)  164.98                80
 08/21/2020   21:50:57   (   0.04,-127.79) (   0.72,-124.69)  352.93                80
 08/23/2020   10:09:47   (  -0.04,-127.77) (   0.44,-129.88)  241.68                80
 08/24/2020   09:53:31   (  -0.04,-127.72) (  -0.58,-125.30)  275.82                80
 08/25/2020   22:12:28   (   0.04,-127.62) (  -0.62,-130.52)  331.45                80
 08/26/2020   21:56:12   (   0.04,-127.57) (   0.40,-125.94)  185.68                80
 08/28/2020   10:15:02   (  -0.05,-127.54) (   0.76,-131.13)  409.97                80