Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 19.  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)
 01/21/2018   18:25:40   (   0.00,-134.79) (  -0.13,-134.25)   62.71                80
 01/23/2018   06:47:20   (  -0.01,-134.87) (  -0.88,-138.84)  452.09                80
 01/24/2018   06:24:01   (  -0.00,-134.91) (   0.23,-133.85)  120.90                80
 01/25/2018   18:42:53   (   0.01,-134.95) (   0.76,-138.42)  395.05                80
 01/26/2018   18:24:54   (   0.00,-134.98) (  -0.35,-133.42)  177.66                80
 01/28/2018   06:43:54   (  -0.00,-135.05) (  -0.65,-138.02)  338.59                80
 01/29/2018   06:20:34   (   0.00,-135.08) (   0.46,-133.03)  233.38                80
 01/30/2018   18:39:26   (   0.01,-135.10) (   0.59,-137.58)  284.21                80
 01/31/2018   18:21:26   (   0.02,-135.12) (  -0.52,-132.59)  288.07                80
 02/02/2018   06:40:27   (  -0.03,-135.19) (  -0.48,-137.19)  228.52                80