Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2020   06:13:18   (  -0.22,-128.24) (  -0.83,-130.96)  310.25                80
 12/19/2020   05:55:20   (  -0.23,-128.25) (   0.30,-125.97)  260.10                80
 12/20/2020   18:11:32   (   0.21,-128.24) (   0.75,-130.53)  261.21                80
 12/21/2020   17:53:33   (   0.23,-128.25) (  -0.38,-125.54)  308.86                80
 12/23/2020   06:09:56   (  -0.21,-128.28) (  -0.60,-130.15)  212.51                80
 12/24/2020   05:51:56   (  -0.23,-128.28) (   0.47,-125.15)  357.59                80
 12/25/2020   18:08:09   (   0.20,-128.27) (   0.51,-129.72)  164.14                80
 12/26/2020   17:50:10   (   0.22,-128.28) (  -0.56,-124.72)  405.34                80
 12/28/2020   06:06:32   (  -0.19,-128.29) (  -0.42,-129.33)  117.51                80
 12/29/2020   05:48:33   (  -0.21,-128.29) (   0.65,-124.32)  451.83                80
 12/30/2020   18:04:46   (   0.19,-128.27) (   0.32,-128.90)   70.89                80