Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 9 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/26/2015   22:20:49   (  -0.29,-135.22) (   0.26,-132.84)  272.49                80
 09/28/2015   10:39:57   (   0.27,-135.18) (   0.90,-138.11)  333.53                80
 09/29/2015   10:23:51   (   0.28,-135.16) (  -0.09,-133.58)  181.05                80
 09/30/2015   22:43:08   (  -0.26,-135.15) (  -1.07,-138.89)  425.68                80
 10/01/2015   22:27:02   (  -0.27,-135.14) (  -0.08,-134.36)   88.89                80
 10/04/2015   10:30:04   (   0.26,-135.07) (   0.24,-135.10)    4.36                80
 10/06/2015   22:30:35   (  -0.24,-135.02) (  -0.40,-135.88)   98.04                80
 10/07/2015   22:14:29   (  -0.25,-135.00) (   0.59,-131.35)  416.05                80
 10/09/2015   10:33:36   (   0.23,-134.95) (   0.61,-136.62)  190.70                80