Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/25/2020   10:22:23   (  -0.36,-128.44) (   0.62,-132.82)  499.31                80
 02/26/2020   10:01:59   (  -0.36,-128.44) (  -0.42,-128.24)   22.72                 9
 02/28/2020   22:03:32   (   0.36,-128.46) (   0.27,-128.90)   49.25                80
 02/29/2020   21:47:16   (   0.36,-128.46) (   1.31,-124.32)  472.44                80
 03/02/2020   10:08:46   (  -0.36,-128.44) (  -0.14,-129.52)  122.77                80
 03/03/2020   09:47:10   (  -0.35,-128.43) (  -1.12,-124.93)  398.28                80
 03/04/2020   22:08:49   (   0.35,-128.44) (  -0.05,-130.16)  197.04                80
 03/05/2020   21:52:34   (   0.34,-128.43) (   0.99,-125.59)  323.72                80
 03/07/2020   10:14:04   (  -0.34,-128.39) (   0.19,-130.78)  272.46                80
 03/08/2020   09:52:29   (  -0.34,-128.38) (  -0.85,-126.21)  247.76                80