Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2016   22:35:54   (   0.09,-134.78) (  -0.55,-137.51)  311.67                80
 01/16/2016   22:19:49   (   0.09,-134.82) (   0.47,-132.98)  209.36                80
 01/18/2016   10:38:56   (  -0.09,-134.94) (   0.66,-138.26)  378.51                80
 01/19/2016   10:22:51   (  -0.08,-134.97) (  -0.36,-133.72)  142.07                80
 01/20/2016   22:42:05   (   0.08,-134.96) (  -0.85,-139.02)  463.06                80
 01/21/2016   22:26:00   (   0.08,-135.00) (   0.17,-134.49)   57.31                80
 01/24/2016   10:29:01   (  -0.08,-135.13) (  -0.08,-135.24)   11.49                80
 01/26/2016   22:29:30   (   0.08,-135.15) (  -0.11,-136.00)   97.09                80
 01/27/2016   22:13:25   (   0.07,-135.18) (   0.91,-131.47)  422.72                80
 01/29/2016   10:32:31   (  -0.08,-135.28) (   0.26,-136.74)  166.51                80