Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 4 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/29/2012   10:19:58   (   0.04,-135.11) (  -0.29,-133.77)  152.41                80
 04/30/2012   22:39:13   (  -0.03,-135.15) (  -0.91,-139.08)  447.34                80
 05/01/2012   22:23:08   (  -0.03,-135.18) (   0.09,-134.54)   72.28                80
 05/04/2012   10:23:29   (   0.02,-135.23) (   0.05,-135.28)    6.15                80
 05/06/2012   22:26:40   (  -0.01,-135.28) (  -0.19,-136.06)   88.77                80
 05/07/2012   22:10:35   (  -0.02,-135.30) (   0.81,-131.52)  429.62                80
 05/09/2012   10:29:42   (  -0.00,-135.32) (   0.33,-136.80)  169.12                80
 05/10/2012   10:13:37   (   0.01,-135.33) (  -0.67,-132.27)  349.02                80
 05/11/2012   22:32:53   (   0.01,-135.35) (  -0.46,-137.58)  253.57                80
 05/12/2012   22:16:48   (  -0.00,-135.36) (   0.54,-133.05)  264.61                80