Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 10 21.  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)
 10/22/2017   06:14:07   (   0.27,-135.12) (   0.88,-132.22)  329.76                80
 10/23/2017   18:32:57   (  -0.27,-135.11) (   0.11,-136.78)  190.88                80
 10/24/2017   18:14:57   (  -0.26,-135.08) (  -1.01,-131.79)  375.52                80
 10/26/2017   06:33:55   (   0.26,-135.00) (  -0.04,-136.38)  156.95                80
 10/27/2017   06:10:35   (   0.26,-134.96) (   1.08,-131.38)  408.30                80
 10/28/2017   18:29:24   (  -0.26,-134.94) (  -0.03,-135.94)  114.13                80
 10/29/2017   18:11:23   (  -0.25,-134.90) (  -1.15,-130.94)  451.53                80
 10/31/2017   06:30:22   (   0.25,-134.82) (   0.10,-135.53)   81.18                80
 11/01/2017   06:07:01   (   0.25,-134.77) (   1.22,-130.54)  483.32                80
 11/02/2017   18:25:51   (  -0.25,-134.73) (  -0.19,-135.09)   40.97                80