Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/10/2020   10:03:46   (  -0.36,-128.25) (  -0.18,-128.97)   83.14                80
 02/11/2020   09:47:31   (  -0.35,-128.28) (  -1.21,-124.40)  442.20                80
 02/12/2020   22:06:31   (   0.37,-128.33) (   0.06,-129.64)  149.14                80
 02/13/2020   21:50:16   (   0.36,-128.37) (   1.10,-125.06)  376.14                80
 02/15/2020   10:09:06   (  -0.37,-128.41) (   0.06,-130.26)  211.64                80
 02/16/2020   09:52:50   (  -0.36,-128.44) (  -0.97,-125.69)  313.19                80
 02/17/2020   22:11:51   (   0.37,-128.48) (  -0.17,-130.93)  279.13                80
 02/18/2020   21:55:35   (   0.36,-128.50) (   0.86,-126.35)  245.56                80
 02/20/2020   10:14:26   (  -0.36,-128.54) (   0.30,-131.55)  342.72                80
 02/21/2020   09:58:10   (  -0.36,-128.57) (  -0.74,-126.98)  181.62                80
 02/22/2020   22:17:09   (   0.36,-128.60) (  -0.46,-132.21)  411.37                80
 02/23/2020   22:00:54   (   0.36,-128.62) (   0.58,-127.63)  112.98                80