Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/11/2017   10:08:54   (   0.10,-134.73) (  -0.81,-130.71)  457.73                80
 11/12/2017   22:28:10   (  -0.07,-134.70) (  -0.38,-136.02)  150.48                80
 11/13/2017   22:12:06   (  -0.08,-134.75) (   0.66,-131.49)  371.02                80
 11/15/2017   10:31:14   (   0.06,-134.91) (   0.46,-136.78)  212.58                80
 11/16/2017   10:15:09   (   0.07,-134.95) (  -0.52,-132.24)  308.51                80
 11/17/2017   22:34:25   (  -0.05,-134.91) (  -0.66,-137.55)  300.71                80
 11/18/2017   22:18:20   (  -0.06,-134.95) (   0.38,-133.02)  220.21                80
 11/20/2017   10:37:29   (   0.04,-135.11) (   0.74,-138.31)  364.14                80
 11/21/2017   10:21:23   (   0.05,-135.14) (  -0.24,-133.77)  156.19                80
 11/22/2017   22:40:40   (  -0.03,-135.09) (  -0.93,-139.08)  454.44                80
 11/23/2017   22:24:35   (  -0.04,-135.12) (   0.11,-134.55)   65.68                80