Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 10 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/28/2017   22:12:08   (  -0.15,-134.88) (   0.61,-131.47)  388.81                80
 10/30/2017   10:31:16   (   0.13,-134.90) (   0.51,-136.75)  210.59                80
 10/31/2017   10:15:10   (   0.14,-134.86) (  -0.46,-132.21)  301.48                80
 11/01/2017   22:34:27   (  -0.11,-134.71) (  -0.73,-137.52)  319.53                80
 11/02/2017   22:18:21   (  -0.13,-134.67) (   0.24,-132.98)  192.58                80
 11/04/2017   10:37:30   (   0.10,-134.68) (   0.88,-138.26)  407.11                80
 11/05/2017   10:21:24   (   0.12,-134.63) (  -0.09,-133.72)  104.06                80
 11/07/2017   22:21:55   (  -0.11,-134.42) (  -0.12,-134.49)    8.27                80
 11/10/2017   10:24:58   (   0.09,-134.37) (   0.27,-135.23)   98.46                80
 11/11/2017   10:08:52   (   0.10,-134.31) (  -0.70,-130.70)  411.83                80