Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/12/2018   22:11:47   (   0.31,-135.24) (   1.19,-131.45)  431.76                80
 08/14/2018   10:30:56   (  -0.33,-135.16) (   0.01,-136.72)  177.42                80
 08/15/2018   10:14:51   (  -0.33,-135.13) (  -0.97,-132.18)  335.96                80
 08/16/2018   22:34:09   (   0.35,-135.12) (  -0.16,-137.50)  270.58                80
 08/17/2018   22:18:05   (   0.34,-135.09) (   0.82,-132.97)  242.69                80
 08/19/2018   10:37:13   (  -0.36,-135.02) (   0.38,-138.23)  366.96                80
 08/20/2018   10:21:10   (  -0.35,-134.98) (  -0.67,-133.71)  145.70                80
 08/21/2018   22:40:27   (   0.37,-134.96) (  -0.52,-139.02)  462.31                80
 08/22/2018   22:24:23   (   0.37,-134.92) (   0.47,-134.48)   50.20                80
 08/25/2018   10:24:48   (  -0.38,-134.80) (  -0.31,-135.22)   47.98                80
 08/26/2018   10:08:43   (  -0.37,-134.76) (  -1.29,-130.69)  463.98                80