Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2018   10:14:51   (  -0.32,-135.13) (  -0.99,-132.19)  335.83                80
 08/16/2018   22:34:09   (   0.34,-135.12) (  -0.21,-137.49)  270.62                80
 08/17/2018   22:18:05   (   0.34,-135.09) (   0.83,-132.97)  242.61                80
 08/19/2018   10:37:14   (  -0.36,-135.01) (   0.37,-138.23)  367.24                80
 08/20/2018   10:21:09   (  -0.35,-134.98) (  -0.62,-133.70)  145.35                80
 08/21/2018   22:40:27   (   0.37,-134.95) (  -0.51,-139.02)  462.58                80
 08/22/2018   22:24:23   (   0.37,-134.92) (   0.48,-134.48)   49.90                80
 08/25/2018   10:24:47   (  -0.38,-134.79) (  -0.26,-135.21)   48.55                80
 08/26/2018   10:08:43   (  -0.37,-134.75) (  -1.30,-130.69)  463.39                80
 08/27/2018   22:28:01   (   0.39,-134.71) (   0.13,-136.00)  145.57                80
)    1.37                48
 08/27/2018   04:07:12   ( -81.42, -12.12) 08/27/2018   04:07:37  ( -81.43, -12.25)    2.17                25