Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 11 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/07/2015   22:30:17   (  -0.08,-135.23) (  -0.26,-135.95)   82.35                80
 11/08/2015   22:14:13   (  -0.10,-135.26) (   0.75,-131.42)  437.17                80
 11/10/2015   10:33:21   (   0.07,-135.31) (   0.38,-136.71)  158.60                80
 11/11/2015   10:17:16   (   0.08,-135.34) (  -0.64,-132.18)  360.18                80
 11/12/2015   22:36:34   (  -0.06,-135.35) (  -0.51,-137.50)  244.47                80
 11/13/2015   22:20:28   (  -0.07,-135.37) (   0.46,-132.96)  274.16                80
 11/15/2015   10:39:37   (   0.04,-135.41) (   0.67,-138.25)  322.47                80
 11/16/2015   10:23:31   (   0.06,-135.43) (  -0.30,-133.71)  195.34                80
 11/17/2015   22:42:48   (  -0.03,-135.42) (  -0.83,-139.03)  411.27                80
 11/18/2015   22:26:43   (  -0.04,-135.43) (   0.14,-134.49)  106.48                80
 11/20/2015   10:45:51   (   0.01,-135.47) (   0.99,-139.78)  490.78                80