Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 3 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 03/20/2018   06:27:47   (   0.00,-134.88) (  -0.30,-136.28)  159.55                80
 03/21/2018   06:09:46   (  -0.00,-134.84) (   0.80,-131.28)  405.73                80
 03/22/2018   18:25:54   (  -0.01,-134.79) (   0.22,-135.84)  119.46                80
 03/23/2018   18:07:53   (  -0.00,-134.74) (  -0.89,-130.84)  445.22                80
 03/25/2018   06:24:10   (   0.01,-134.66) (  -0.16,-135.43)   87.83                80
 03/26/2018   06:06:09   (   0.01,-134.61) (   0.94,-130.43)  476.45                80
 03/27/2018   18:22:17   (  -0.02,-134.55) (   0.07,-134.99)   49.93                80
 03/30/2018   06:20:33   (   0.02,-134.41) (  -0.01,-134.58)   19.31                80
 04/01/2018   18:21:20   (  -0.02,-134.29) (  -0.08,-134.14)   18.21                80