Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/07/2017   22:24:36   (  -0.10,-134.45) (  -0.09,-134.49)    5.49                80
 11/10/2017   10:24:57   (   0.09,-134.39) (   0.29,-135.23)   95.81                80
 11/11/2017   10:08:53   (   0.10,-134.33) (  -0.74,-130.70)  414.85                80
 11/12/2017   22:28:08   (  -0.07,-134.18) (  -0.50,-135.99)  207.54                80
 11/13/2017   22:12:04   (  -0.08,-134.13) (   0.54,-131.47)  303.49                80
 11/15/2017   10:31:11   (   0.06,-134.12) (   0.64,-136.74)  298.13                80
 11/16/2017   10:15:06   (   0.07,-134.06) (  -0.34,-132.20)  212.27                80
 11/17/2017   22:34:22   (  -0.05,-133.89) (  -0.84,-137.51)  411.56                80
 11/18/2017   22:18:16   (  -0.06,-133.84) (   0.14,-132.97)   98.88                80
 11/21/2017   10:18:38   (   0.05,-133.76) (   0.05,-133.70)    6.87                80