Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 9 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2015   22:31:03   (  -0.37,-135.16) (  -0.51,-135.88)   81.10                80
 09/05/2015   22:14:56   (  -0.37,-135.18) (   0.46,-131.34)  437.35                80
 09/07/2015   10:36:43   (   0.36,-135.18) (   0.70,-136.61)  162.90                80
 09/08/2015   10:15:17   (   0.36,-135.19) (  -0.33,-132.08)  355.05                80
 09/09/2015   22:37:12   (  -0.35,-135.23) (  -0.80,-137.39)  245.92                80
 09/10/2015   22:21:06   (  -0.35,-135.24) (   0.17,-132.85)  272.19                80
 09/12/2015   10:40:12   (   0.34,-135.24) (   0.99,-138.12)  328.06                80
 09/13/2015   10:24:07   (   0.34,-135.25) (  -0.04,-133.59)  189.58                80
 09/14/2015   22:43:21   (  -0.33,-135.27) (  -1.15,-138.89)  412.69                80
 09/15/2015   22:27:16   (  -0.33,-135.28) (  -0.11,-134.36)  104.94                80