Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 11 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)
 11/14/2017   18:32:29   (  -0.22,-134.82) (   0.01,-135.91)  124.69                80
 11/15/2017   18:14:29   (  -0.22,-134.86) (  -1.10,-130.92)  449.23                80
 11/17/2017   06:33:30   (   0.22,-134.94) (   0.08,-135.51)   65.07                80
 11/19/2017   18:29:03   (  -0.21,-135.01) (  -0.22,-135.09)    8.96                80
 11/22/2017   06:27:23   (   0.20,-135.12) (   0.31,-134.69)   50.04                80
 11/23/2017   18:46:15   (  -0.19,-135.13) (   0.71,-139.24)  468.33                80
 11/24/2017   18:28:15   (  -0.19,-135.16) (  -0.40,-134.25)  104.30                80
 11/26/2017   06:47:15   (   0.18,-135.25) (  -0.62,-138.84)  409.88                80
 11/27/2017   06:23:56   (   0.18,-135.27) (   0.49,-133.85)  161.61                80