Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 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)
 07/15/2020   21:52:02   (  -0.02,-128.34) (   0.73,-125.07)  373.01                80
 07/17/2020   10:13:32   (   0.02,-128.40) (   0.41,-130.27)  212.42                80
 07/18/2020   09:51:56   (   0.01,-128.41) (  -0.60,-125.69)  309.75                80
 07/19/2020   22:13:34   (  -0.00,-128.36) (  -0.58,-130.91)  291.27                80
 07/20/2020   21:57:17   (   0.01,-128.36) (   0.44,-126.33)  230.69                80
 07/22/2020   10:18:48   (  -0.02,-128.41) (   0.71,-131.53)  355.78                80
 07/23/2020   09:57:12   (  -0.02,-128.41) (  -0.36,-126.96)  165.93                80
 07/24/2020   22:18:49   (   0.02,-128.35) (  -0.86,-132.17)  435.87                80
 07/25/2020   22:02:33   (   0.02,-128.35) (   0.16,-127.59)   85.93                80
 07/28/2020   10:02:28   (  -0.01,-128.39) (  -0.08,-128.22)   20.58                80