Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2019   21:52:55   (   0.32,-128.43) (   0.69,-126.69)  197.08                80
 08/18/2019   10:12:03   (  -0.34,-128.46) (   0.46,-131.97)  400.15                80
 08/19/2019   09:55:59   (  -0.33,-128.46) (  -0.56,-127.44)  116.58                80
 08/20/2019   22:15:16   (   0.35,-128.43) (  -0.59,-132.75)  491.32                80
 08/21/2019   21:59:10   (   0.34,-128.43) (   0.37,-128.20)   25.39                80
 08/24/2019   09:59:34   (  -0.35,-128.45) (  -0.24,-128.95)   56.82                80
 08/25/2019   09:43:30   (  -0.35,-128.44) (  -1.26,-124.42)  458.74                80
 08/26/2019   22:02:46   (   0.37,-128.40) (   0.06,-129.72)  151.04                80
 08/27/2019   21:46:42   (   0.36,-128.38) (   1.08,-125.19)  364.28                80
 08/29/2019   10:05:50   (  -0.38,-128.40) (   0.08,-130.46)  235.01                80
 08/30/2019   09:49:45   (  -0.37,-128.38) (  -0.94,-125.93)  279.94                80