Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/05/2017   10:21:24   (   0.11,-134.64) (  -0.10,-133.72)  105.09                80
 11/07/2017   22:21:55   (  -0.10,-134.44) (  -0.12,-134.49)    5.16                80
 11/10/2017   10:24:58   (   0.09,-134.39) (   0.26,-135.23)   95.51                80
 11/11/2017   10:08:52   (   0.10,-134.34) (  -0.71,-130.69)  415.10                80
 11/12/2017   22:28:09   (  -0.07,-134.17) (  -0.47,-136.00)  208.00                80
 11/13/2017   22:12:03   (  -0.08,-134.12) (   0.51,-131.46)  302.97                80
 11/15/2017   10:31:11   (   0.06,-134.12) (   0.67,-136.73)  298.06                80
 11/16/2017   10:15:06   (   0.07,-134.07) (  -0.36,-132.21)  212.33                80
 11/17/2017   22:34:21   (  -0.05,-133.89) (  -0.87,-137.50)  412.20                80
 11/18/2017   22:18:16   (  -0.06,-133.83) (   0.11,-132.96)   98.22                80