Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 6 22.  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)
 06/23/2017   06:19:09   (   0.15,-135.42) (   0.69,-133.06)  269.52                80
 06/24/2017   18:40:40   (  -0.13,-135.47) (   0.36,-137.62)  244.44                80
 06/25/2017   18:17:20   (  -0.15,-135.48) (  -0.78,-132.63)  324.55                80
 06/27/2017   06:38:59   (   0.13,-135.44) (  -0.27,-137.22)  203.35                80
 06/28/2017   06:15:40   (   0.15,-135.44) (   0.86,-132.23)  365.69                80
 06/29/2017   18:37:10   (  -0.13,-135.49) (   0.17,-136.79)  148.43                80
 06/30/2017   18:13:51   (  -0.15,-135.49) (  -0.97,-131.80)  420.34                80
 07/02/2017   06:35:30   (   0.13,-135.44) (  -0.08,-136.39)  108.02                80
 07/03/2017   06:12:11   (   0.15,-135.44) (   1.06,-131.40)  460.63                80
 07/04/2017   18:33:41   (  -0.12,-135.48) (  -0.03,-135.96)   54.03                80