Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 11 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)
 11/21/2017   18:32:19   (  -0.20,-135.05) (   0.15,-136.75)  192.41                80
 11/22/2017   18:14:17   (  -0.20,-135.08) (  -0.92,-131.74)  380.31                80
 11/24/2017   06:33:17   (   0.19,-135.16) (  -0.07,-136.35)  134.59                80
 11/25/2017   06:09:56   (   0.19,-135.19) (   1.06,-131.35)  436.99                80
 11/26/2017   18:28:44   (  -0.18,-135.18) (   0.01,-135.90)   82.70                80
 11/27/2017   18:10:44   (  -0.18,-135.21) (  -1.12,-130.91)  489.34                80
 11/29/2017   06:29:43   (   0.18,-135.28) (   0.15,-135.51)   26.02                80
 12/01/2017   18:27:51   (  -0.17,-135.27) (  -0.21,-135.07)   23.29                80
 12/03/2017   06:46:49   (   0.16,-135.35) (  -0.82,-139.66)  491.91                80
 12/04/2017   06:23:29   (   0.16,-135.36) (   0.31,-134.67)   78.08                80