Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 3 21.  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)
 03/21/2018   06:09:46   (   0.00,-134.84) (   0.81,-131.28)  405.76                80
 03/22/2018   18:25:54   (  -0.01,-134.79) (   0.21,-135.84)  119.35                80
 03/23/2018   18:07:53   (  -0.01,-134.74) (  -0.89,-130.84)  445.37                80
 03/25/2018   06:24:10   (   0.01,-134.66) (  -0.16,-135.43)   87.63                80
 03/26/2018   06:06:09   (   0.01,-134.61) (   0.95,-130.43)  476.69                80
 03/27/2018   18:22:17   (  -0.02,-134.55) (   0.07,-134.99)   49.62                80
 03/30/2018   06:20:33   (   0.02,-134.42) (  -0.01,-134.58)   18.91                80
 04/01/2018   18:21:19   (  -0.02,-134.30) (  -0.03,-134.13)   18.78                80