Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 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)
 01/20/2016   22:42:05   (   0.08,-134.95) (  -0.83,-139.02)  463.86                80
 01/21/2016   22:26:00   (   0.08,-134.99) (   0.19,-134.49)   56.31                80
 01/24/2016   10:26:21   (  -0.08,-135.12) (  -0.03,-135.23)   12.65                80
 01/26/2016   22:29:31   (   0.08,-135.13) (  -0.11,-136.00)   98.87                80
 01/27/2016   22:13:25   (   0.08,-135.16) (   0.92,-131.47)  420.81                80
 01/29/2016   10:35:11   (  -0.08,-135.26) (   0.25,-136.74)  168.49                80
 01/30/2016   10:13:46   (  -0.07,-135.29) (  -0.77,-132.21)  350.84                80
 01/31/2016   22:35:40   (   0.07,-135.26) (  -0.45,-137.50)  256.36                80
 02/01/2016   22:19:35   (   0.07,-135.28) (   0.58,-132.97)  262.63                80