Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2017   06:37:28   (   0.27,-135.15) (  -0.19,-137.22)  236.33                80
 10/22/2017   06:14:08   (   0.27,-135.12) (   0.92,-132.23)  329.81                80
 10/23/2017   18:32:57   (  -0.27,-135.11) (   0.13,-136.78)  190.58                80
 10/24/2017   18:14:56   (  -0.26,-135.08) (  -0.98,-131.78)  375.94                80
 10/26/2017   06:33:55   (   0.26,-135.00) (  -0.06,-136.37)  156.54                80
 10/27/2017   06:10:34   (   0.26,-134.97) (   1.05,-131.38)  408.81                80
 10/28/2017   18:29:23   (  -0.26,-134.94) (  -0.01,-135.93)  113.38                80
 10/29/2017   18:11:23   (  -0.25,-134.91) (  -1.13,-130.94)  452.40                80
 10/31/2017   06:30:21   (   0.25,-134.83) (   0.08,-135.53)   80.33                80
 11/01/2017   06:07:01   (   0.25,-134.78) (   1.20,-130.53)  484.26                80
 11/02/2017   18:25:50   (  -0.25,-134.74) (  -0.16,-135.09)   39.75                80