Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 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)
 07/14/2020   22:08:17   (  -0.03,-128.33) (  -0.33,-129.65)  150.12                80
 07/15/2020   21:52:02   (  -0.02,-128.34) (   0.74,-125.08)  372.83                80
 07/17/2020   10:13:31   (   0.02,-128.40) (   0.46,-130.26)  212.51                80
 07/18/2020   09:51:56   (   0.01,-128.41) (  -0.61,-125.69)  309.65                80
 07/19/2020   22:13:34   (   0.00,-128.36) (  -0.56,-130.92)  291.52                80
 07/20/2020   21:57:18   (   0.01,-128.36) (   0.45,-126.34)  230.44                80
 07/22/2020   10:18:48   (  -0.02,-128.41) (   0.70,-131.53)  355.87                80
 07/23/2020   09:57:11   (  -0.02,-128.41) (  -0.32,-126.95)  165.84                80
 07/24/2020   22:18:50   (   0.02,-128.35) (  -0.84,-132.18)  436.11                80
 07/25/2020   22:02:33   (   0.02,-128.35) (   0.18,-127.59)   85.62                80