Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 2 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/19/2016   10:41:01   (  -0.04,-135.32) (   0.63,-138.18)  327.33                80
 02/20/2016   10:19:35   (  -0.04,-135.31) (  -0.41,-133.65)  188.34                80
 02/21/2016   22:44:10   (   0.03,-135.25) (  -0.80,-138.95)  422.07                80
 02/22/2016   22:22:44   (   0.03,-135.23) (   0.24,-134.42)   93.42                80
 02/25/2016   10:28:23   (  -0.03,-135.24) (  -0.04,-135.14)   11.32                80
 02/27/2016   22:31:32   (   0.03,-135.16) (  -0.13,-135.91)   85.20                80
 02/28/2016   22:10:05   (   0.03,-135.14) (   0.86,-131.36)  429.50                80
 03/01/2016   10:34:31   (  -0.02,-135.15) (   0.32,-136.63)  169.25                80
 03/02/2016   10:13:05   (  -0.02,-135.12) (  -0.72,-132.10)  345.06                80