Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 10 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/25/2017   10:25:01   (   0.16,-135.07) (   0.21,-135.23)   17.53                80
 10/26/2017   10:08:56   (   0.17,-135.04) (  -0.82,-130.70)  495.12                80
 10/27/2017   22:28:13   (  -0.14,-134.91) (  -0.37,-136.00)  124.06                80
 10/28/2017   22:12:07   (  -0.15,-134.88) (   0.60,-131.47)  388.68                80
 10/30/2017   10:31:16   (   0.13,-134.90) (   0.53,-136.75)  210.75                80
 10/31/2017   10:15:10   (   0.14,-134.85) (  -0.44,-132.21)  301.28                80
 11/01/2017   22:34:26   (  -0.11,-134.71) (  -0.75,-137.51)  319.78                80
 11/02/2017   22:18:22   (  -0.13,-134.67) (   0.28,-132.99)  192.30                80
 11/04/2017   10:37:29   (   0.10,-134.68) (   0.90,-138.26)  407.51                80
 11/05/2017   10:21:24   (   0.12,-134.63) (  -0.07,-133.72)  103.65                80