Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 13.  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)
 01/14/2018   06:33:35   (   0.02,-134.74) (  -0.12,-135.51)   87.87                80
 01/15/2018   06:10:15   (   0.03,-134.69) (   0.99,-130.52)  476.20                80
 01/16/2018   18:31:46   (  -0.02,-134.57) (   0.11,-135.06)   56.49                80
 01/19/2018   06:30:07   (   0.01,-134.50) (  -0.03,-134.66)   18.98                80
 01/21/2018   18:25:38   (  -0.00,-134.32) (  -0.04,-134.23)   10.96                80
 01/24/2018   06:23:58   (  -0.00,-134.23) (   0.08,-133.82)   46.67                80
 01/25/2018   18:42:50   (   0.00,-134.09) (   0.97,-138.37)  488.50                80
 01/26/2018   18:24:50   (  -0.00,-134.03) (  -0.14,-133.38)   73.83                80