Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 3 10.  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)
 03/11/2018   18:14:26   (   0.01,-135.17) (  -0.96,-130.96)  481.35                80
 03/13/2018   06:30:45   (  -0.01,-135.12) (  -0.10,-135.55)   48.73                80
 03/15/2018   18:31:37   (   0.01,-135.06) (  -0.00,-135.12)    6.70                80
 03/18/2018   06:29:57   (  -0.01,-134.96) (   0.06,-134.71)   28.38                80
 03/19/2018   18:46:08   (   0.00,-134.92) (   0.95,-139.27)  496.13                80
 03/20/2018   18:28:08   (   0.01,-134.88) (  -0.11,-134.27)   68.92                80
 03/22/2018   06:44:28   (  -0.00,-134.80) (  -0.89,-138.87)  463.47                80
 03/23/2018   06:26:28   (  -0.00,-134.76) (   0.18,-133.87)  100.96                80
 03/24/2018   18:42:39   (  -0.00,-134.70) (   0.84,-138.43)  425.24                80