Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 11 12.  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)
 11/13/2017   06:13:37   (   0.23,-134.77) (   1.01,-131.35)  389.82                80
 11/14/2017   18:32:29   (  -0.22,-134.82) (   0.03,-135.91)  124.54                80
 11/15/2017   18:14:29   (  -0.22,-134.86) (  -1.09,-130.91)  449.44                80
 11/17/2017   06:33:29   (   0.22,-134.95) (   0.06,-135.51)   64.91                80
 11/19/2017   18:29:02   (  -0.21,-135.01) (  -0.21,-135.08)    8.09                80
 11/22/2017   06:27:23   (   0.20,-135.13) (   0.30,-134.68)   50.51                80
 11/23/2017   18:46:14   (  -0.19,-135.14) (   0.73,-139.24)  467.68                80
 11/24/2017   18:28:15   (  -0.19,-135.17) (  -0.39,-134.25)  104.99                80
 11/26/2017   06:47:15   (   0.18,-135.25) (  -0.64,-138.84)  409.15                80