Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 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)
 11/02/2017   22:18:22   (  -0.12,-134.68) (   0.26,-132.98)  193.73                80
 11/04/2017   10:37:29   (   0.10,-134.69) (   0.92,-138.25)  406.26                80
 11/05/2017   10:21:24   (   0.11,-134.64) (  -0.11,-133.73)  105.16                80
 11/07/2017   22:21:55   (  -0.10,-134.44) (  -0.11,-134.49)    5.95                80
 11/10/2017   10:24:58   (   0.09,-134.39) (   0.25,-135.24)   96.06                80
 11/11/2017   10:08:53   (   0.10,-134.33) (  -0.72,-130.70)  414.47                80
 11/12/2017   22:28:09   (  -0.07,-134.16) (  -0.46,-136.00)  209.28                80
 11/13/2017   22:12:03   (  -0.08,-134.11) (   0.51,-131.46)  301.57                80
 11/15/2017   10:31:11   (   0.06,-134.11) (   0.67,-136.74)  299.19                80
 11/16/2017   10:15:06   (   0.07,-134.06) (  -0.36,-132.21)  211.10                80