Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 9.  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)
 01/10/2018   06:13:42   (   0.03,-134.90) (   0.80,-131.35)  404.25                80
 01/11/2018   18:32:33   (  -0.03,-134.80) (   0.23,-135.91)  126.60                80
 01/12/2018   18:14:34   (  -0.03,-134.76) (  -0.87,-130.91)  438.11                80
 01/14/2018   06:33:34   (   0.02,-134.74) (  -0.16,-135.51)   87.47                80
 01/15/2018   06:10:15   (   0.03,-134.70) (   0.95,-130.51)  476.70                80
 01/16/2018   18:29:06   (  -0.02,-134.58) (   0.09,-135.07)   55.50                80
 01/19/2018   06:30:07   (   0.01,-134.51) (  -0.01,-134.67)   17.77                80
 01/21/2018   18:25:39   (  -0.01,-134.33) (  -0.05,-134.23)   12.84                80