Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2020   09:55:03   (   0.03,-128.18) (  -0.38,-126.49)  194.31                80
 07/03/2020   22:16:41   (  -0.03,-128.16) (  -0.82,-131.71)  404.31                80
 07/04/2020   22:00:25   (  -0.02,-128.18) (   0.19,-127.12)  119.88                80
 07/06/2020   10:21:55   (   0.02,-128.27) (   0.94,-132.32)  461.92                80
 07/07/2020   10:00:20   (   0.02,-128.29) (  -0.13,-127.75)   61.95                80
 07/09/2020   22:03:02   (  -0.02,-128.28) (  -0.05,-128.39)   13.24                80
 07/12/2020   10:08:15   (   0.03,-128.39) (   0.18,-129.01)   71.18                80
 07/13/2020   09:46:40   (   0.02,-128.40) (  -0.89,-124.44)  452.35                80
 07/14/2020   22:08:18   (  -0.02,-128.36) (  -0.28,-129.66)  147.80                80
 07/15/2020   21:52:02   (  -0.02,-128.37) (   0.73,-125.08)  375.61                80