Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2020   10:19:22   (  -0.33,-128.35) (   0.50,-132.05)  421.91                80
 03/13/2020   09:57:47   (  -0.33,-128.33) (  -0.54,-127.48)   98.14                80
 03/14/2020   22:19:26   (   0.32,-128.34) (  -0.63,-132.71)  497.50                80
 03/15/2020   22:03:09   (   0.33,-128.32) (   0.36,-128.12)   22.61                80
 03/18/2020   10:05:44   (  -0.31,-128.25) (  -0.21,-128.74)   55.31                80
 03/19/2020   09:44:09   (  -0.32,-128.23) (  -1.25,-124.17)  464.09                80
 03/20/2020   22:05:47   (   0.30,-128.23) (   0.04,-129.39)  132.28                80
 03/21/2020   21:49:32   (   0.30,-128.21) (   1.08,-124.81)  387.38                80
 03/23/2020   10:11:02   (  -0.29,-128.16) (   0.12,-130.00)  210.27                80
 03/24/2020   09:49:26   (  -0.30,-128.14) (  -0.92,-125.43)  308.80                80
 03/25/2020   22:13:45   (   0.28,-128.12) (  -0.28,-130.65)  288.47                80