Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/17/2020   10:13:32   (   0.02,-128.40) (   0.43,-130.27)  212.36                80
 07/18/2020   09:51:55   (   0.01,-128.41) (  -0.58,-125.69)  309.82                80
 07/19/2020   22:13:34   (  -0.00,-128.36) (  -0.59,-130.91)  291.13                80
 07/20/2020   21:57:18   (   0.01,-128.36) (   0.48,-126.34)  230.82                80
 07/22/2020   10:18:49   (  -0.02,-128.41) (   0.67,-131.54)  355.76                80
 07/23/2020   09:57:12   (  -0.02,-128.41) (  -0.34,-126.95)  165.90                80
 07/24/2020   22:18:50   (   0.02,-128.35) (  -0.82,-132.18)  435.82                80
 07/25/2020   22:02:34   (   0.02,-128.35) (   0.19,-127.60)   85.97                80
 07/28/2020   10:02:28   (  -0.01,-128.39) (  -0.04,-128.21)   20.42                80