Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 7 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/03/2015   22:16:03   (   0.10,-134.85) (   0.87,-131.48)  384.65                80
 07/05/2015   10:35:10   (  -0.12,-134.91) (   0.32,-136.75)  210.50                80
 07/06/2015   10:19:05   (  -0.11,-134.93) (  -0.74,-132.23)  308.77                80
 07/07/2015   22:38:21   (   0.13,-134.95) (  -0.46,-137.53)  294.54                80
 07/08/2015   22:22:15   (   0.12,-134.97) (   0.54,-133.00)  224.25                80
 07/10/2015   10:41:22   (  -0.14,-135.01) (   0.59,-138.27)  372.20                80
 07/11/2015   10:25:17   (  -0.14,-135.03) (  -0.41,-133.74)  146.31                80
 07/12/2015   22:44:33   (   0.16,-135.04) (  -0.72,-139.06)  457.75                80
 07/13/2015   22:28:28   (   0.15,-135.05) (   0.29,-134.53)   60.40                80
 07/16/2015   10:28:49   (  -0.16,-135.10) (  -0.10,-135.26)   19.38                80