Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 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)
 08/13/2019   10:05:47   (  -0.32,-128.44) (   0.14,-130.46)  230.21                80
 08/14/2019   09:49:43   (  -0.31,-128.44) (  -0.88,-125.92)  286.88                80
 08/15/2019   22:09:00   (   0.33,-128.42) (  -0.28,-131.24)  320.79                80
 08/16/2019   21:52:56   (   0.33,-128.42) (   0.74,-126.71)  196.43                80
 08/18/2019   10:12:03   (  -0.34,-128.46) (   0.46,-131.97)  399.97                80
 08/19/2019   09:55:58   (  -0.34,-128.46) (  -0.55,-127.44)  116.84                80
 08/20/2019   22:15:16   (   0.35,-128.43) (  -0.60,-132.75)  491.74                80
 08/21/2019   21:59:11   (   0.34,-128.43) (   0.42,-128.22)   25.05                80
 08/24/2019   09:59:34   (  -0.35,-128.46) (  -0.23,-128.95)   56.37                80
 08/25/2019   09:43:30   (  -0.35,-128.45) (  -1.25,-124.42)  459.28                80