Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 2 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/26/2018   22:42:25   (  -0.02,-135.39) (  -0.82,-138.92)  402.97                80
 02/27/2018   22:20:59   (  -0.01,-135.38) (   0.19,-134.39)  112.79                80
 03/01/2018   10:45:26   (   0.02,-135.38) (   0.98,-139.65)  486.78                80
 03/02/2018   10:24:00   (   0.02,-135.37) (  -0.03,-135.12)   28.78                80
 03/04/2018   22:29:50   (  -0.02,-135.33) (  -0.14,-135.89)   63.40                80
 03/05/2018   22:08:25   (  -0.01,-135.32) (   0.88,-131.35)  451.91                80
 03/07/2018   10:32:51   (   0.02,-135.31) (   0.29,-136.62)  148.39                80
 03/08/2018   10:11:25   (   0.01,-135.29) (  -0.72,-132.08)  366.55                80
 03/09/2018   22:36:00   (  -0.02,-135.25) (  -0.51,-137.37)  242.16                80
 03/10/2018   22:14:34   (  -0.02,-135.23) (   0.51,-132.84)  272.47                80
 03/12/2018   10:39:00   (   0.02,-135.21) (   0.67,-138.10)  328.86                80