Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2020   09:47:31   (  -0.35,-128.28) (  -1.24,-124.41)  442.08                80
 02/12/2020   22:06:32   (   0.37,-128.33) (   0.09,-129.65)  148.97                80
 02/13/2020   21:50:15   (   0.36,-128.37) (   1.07,-125.06)  376.35                80
 02/15/2020   10:09:06   (  -0.37,-128.41) (   0.03,-130.27)  211.68                80
 02/16/2020   09:52:51   (  -0.36,-128.44) (  -1.01,-125.69)  313.18                80
 02/17/2020   22:11:50   (   0.37,-128.48) (  -0.20,-130.92)  278.85                80
 02/18/2020   21:55:35   (   0.36,-128.51) (   0.84,-126.35)  245.86                80
 02/20/2020   10:14:25   (  -0.36,-128.54) (   0.32,-131.54)  342.66                80
 02/21/2020   09:58:10   (  -0.36,-128.57) (  -0.71,-126.97)  181.69                80
 02/22/2020   22:17:10   (   0.36,-128.60) (  -0.43,-132.21)  410.96                80
 02/23/2020   22:00:53   (   0.36,-128.63) (   0.56,-127.63)  113.44                80