Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 18.  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) (  -0.84,-130.95)  310.35                80
 12/19/2020   05:55:19   (  -0.23,-128.25) (   0.28,-125.96)  259.94                80
 12/20/2020   18:11:32   (   0.21,-128.24) (   0.71,-130.54)  261.39                80
 12/21/2020   17:53:33   (   0.23,-128.24) (  -0.36,-125.53)  308.61                80
 12/23/2020   06:09:55   (  -0.21,-128.27) (  -0.62,-130.14)  212.88                80
 12/24/2020   05:51:56   (  -0.23,-128.28) (   0.45,-125.14)  357.14                80
 12/25/2020   18:08:09   (   0.20,-128.27) (   0.53,-129.71)  164.65                80
 12/26/2020   17:50:11   (   0.22,-128.27) (  -0.60,-124.72)  404.77                80
 12/28/2020   06:06:32   (  -0.19,-128.29) (  -0.44,-129.32)  118.24                80
 12/29/2020   05:48:34   (  -0.21,-128.29) (   0.69,-124.33)  451.03                80
 12/30/2020   18:04:46   (   0.19,-128.27) (   0.34,-128.89)   71.74                80
 12/31/2020   17:46:47   (   0.21,-128.26) (  -0.79,-123.90)  496.96                80