Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 5 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2016   10:31:44   (   0.04,-134.77) (   0.48,-136.68)  218.17                80
 05/21/2016   10:15:39   (   0.04,-134.73) (  -0.55,-132.16)  293.60                80
 05/22/2016   22:34:56   (  -0.03,-134.65) (  -0.64,-137.46)  320.00                80
 05/23/2016   22:18:50   (  -0.03,-134.61) (   0.33,-132.92)  191.62                80
 05/25/2016   10:37:59   (   0.02,-134.55) (   0.81,-138.20)  415.70                80
 05/26/2016   10:21:53   (   0.03,-134.50) (  -0.15,-133.66)   95.29                80
 05/28/2016   22:22:24   (  -0.02,-134.35) (  -0.06,-134.42)    9.31                80
 05/31/2016   10:25:27   (   0.02,-134.23) (   0.22,-135.16)  106.85                80
 06/01/2016   10:09:21   (   0.02,-134.17) (  -0.75,-130.62)  403.23                80