Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 20.  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)
 12/20/2020   18:11:33   (   0.21,-128.24) (   0.70,-130.54)  261.52                80
 12/21/2020   17:53:33   (   0.23,-128.24) (  -0.37,-125.54)  308.39                80
 12/23/2020   06:09:56   (  -0.21,-128.27) (  -0.61,-130.15)  213.48                80
 12/24/2020   05:51:56   (  -0.23,-128.27) (   0.46,-125.14)  356.42                80
 12/25/2020   18:08:09   (   0.20,-128.26) (   0.52,-129.72)  165.36                80
 12/26/2020   17:50:10   (   0.22,-128.26) (  -0.55,-124.71)  403.95                80
 12/28/2020   06:06:32   (  -0.19,-128.28) (  -0.43,-129.32)  119.42                80
 12/29/2020   05:48:34   (  -0.21,-128.27) (   0.70,-124.33)  449.73                80
 12/30/2020   18:04:46   (   0.19,-128.25) (   0.33,-128.89)   73.04                80
 12/31/2020   17:46:47   (   0.21,-128.25) (  -0.74,-123.89)  495.53                80
 01/02/2021   06:03:09   (  -0.19,-128.25) (  -0.25,-128.50)   29.28                80