Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 10 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/01/2017   22:34:27   (  -0.11,-134.72) (  -0.72,-137.52)  318.94                80
 11/02/2017   22:18:21   (  -0.13,-134.68) (   0.25,-132.98)  193.33                80
 11/04/2017   10:37:29   (   0.10,-134.69) (   0.93,-138.25)  406.47                80
 11/05/2017   10:21:24   (   0.12,-134.64) (  -0.10,-133.72)  104.84                80
 11/07/2017   22:21:55   (  -0.10,-134.43) (  -0.11,-134.49)    6.83                80
 11/10/2017   10:24:58   (   0.09,-134.38) (   0.26,-135.24)   96.95                80
 11/11/2017   10:08:53   (   0.10,-134.32) (  -0.71,-130.70)  413.47                80
 11/12/2017   22:28:09   (  -0.07,-134.15) (  -0.47,-136.00)  210.76                80
 11/13/2017   22:12:03   (  -0.08,-134.10) (   0.51,-131.46)  299.96                80