Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 2 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/27/2018   22:21:00   (  -0.02,-135.38) (   0.21,-134.39)  112.85                80
 03/01/2018   10:45:26   (   0.02,-135.38) (   0.96,-139.66)  487.10                80
 03/02/2018   10:24:01   (   0.02,-135.37) (  -0.05,-135.12)   28.44                80
 03/04/2018   22:29:50   (  -0.02,-135.33) (  -0.12,-135.89)   63.60                80
 03/05/2018   22:08:25   (  -0.02,-135.31) (   0.90,-131.36)  451.78                80
 03/07/2018   10:32:50   (   0.02,-135.30) (   0.33,-136.61)  148.91                80
 03/08/2018   10:11:25   (   0.02,-135.29) (  -0.68,-132.07)  365.99                80
 03/09/2018   22:36:00   (  -0.02,-135.24) (  -0.50,-137.37)  242.47                80
 03/10/2018   22:14:35   (  -0.02,-135.22) (   0.52,-132.84)  272.13                80
 03/12/2018   10:39:01   (   0.03,-135.21) (   0.65,-138.10)  329.54                80
 03/13/2018   10:17:34   (   0.03,-135.18) (  -0.31,-133.56)  184.70                80