Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 6 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)
 06/27/2018   10:30:37   (  -0.09,-135.07) (   0.24,-136.66)  180.39                80
 06/28/2018   10:14:31   (  -0.08,-135.10) (  -0.74,-132.12)  339.88                80
 06/29/2018   22:33:48   (   0.11,-135.16) (  -0.39,-137.43)  258.52                80
 06/30/2018   22:17:43   (   0.09,-135.19) (   0.59,-132.89)  261.53                80
 07/02/2018   10:36:51   (  -0.12,-135.22) (   0.53,-138.17)  336.18                80
 07/03/2018   10:20:46   (  -0.11,-135.25) (  -0.44,-133.63)  183.55                80
 07/04/2018   22:40:03   (   0.13,-135.30) (  -0.68,-138.95)  415.88                80
 07/05/2018   22:23:58   (   0.12,-135.32) (   0.30,-134.41)  103.60                80
 07/07/2018   10:43:06   (  -0.15,-135.34) (   0.82,-139.68)  495.09                80
 07/08/2018   10:27:00   (  -0.14,-135.36) (  -0.16,-135.14)   23.94                80