Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 8 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/12/2017   10:11:54   (   0.34,-134.91) (  -0.27,-132.02)  327.96                80
 08/13/2017   22:33:52   (  -0.36,-134.95) (  -0.87,-137.34)  271.60                80
 08/14/2017   22:17:48   (  -0.35,-134.97) (   0.16,-132.81)  246.50                80
 08/16/2017   10:39:37   (   0.36,-134.98) (   1.06,-138.08)  352.76                80
 08/17/2017   10:18:13   (   0.35,-134.99) (   0.03,-133.55)  163.81                80
 08/18/2017   22:40:11   (  -0.36,-135.01) (  -1.23,-138.86)  438.86                80
 08/19/2017   22:24:07   (  -0.35,-135.02) (  -0.20,-134.33)   78.42                80
 08/22/2017   10:27:13   (   0.35,-135.04) (   0.33,-135.09)    4.91                80
 08/24/2017   22:27:46   (  -0.35,-135.05) (  -0.55,-135.85)   91.45                80