Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/26/2017   10:24:58   (   0.03,-135.25) (   0.04,-135.29)    4.82                80
 11/28/2017   22:28:09   (  -0.02,-135.20) (  -0.23,-136.06)   98.00                80
 11/29/2017   22:12:04   (  -0.03,-135.22) (   0.81,-131.53)  420.82                80
 12/01/2017   10:31:11   (   0.01,-135.35) (   0.36,-136.80)  166.66                80
 12/02/2017   10:15:07   (   0.02,-135.36) (  -0.69,-132.28)  351.62                80
 12/03/2017   22:34:22   (  -0.00,-135.28) (  -0.53,-137.58)  262.12                80
 12/04/2017   22:18:18   (  -0.01,-135.29) (   0.51,-133.05)  255.60                80
 12/06/2017   10:37:25   (  -0.00,-135.40) (   0.66,-138.32)  333.52                80
 12/07/2017   10:21:20   (   0.01,-135.40) (  -0.33,-133.78)  183.86                80
 12/08/2017   22:40:36   (   0.01,-135.31) (  -0.82,-139.10)  430.79                80