Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 2 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/14/2019   09:40:26   (  -0.04,-128.15) (  -0.87,-124.36)  431.73                80
 02/15/2019   22:02:22   (   0.04,-128.11) (  -0.33,-129.66)  177.05                80
 02/16/2019   21:46:17   (   0.03,-128.13) (   0.72,-125.13)  341.78                80
 02/18/2019   10:08:04   (  -0.02,-128.23) (   0.44,-130.40)  246.91                80
 02/19/2019   09:46:39   (  -0.01,-128.25) (  -0.55,-125.87)  271.74                80
 02/20/2019   22:11:14   (   0.01,-128.20) (  -0.65,-131.16)  337.77                80
 02/21/2019   21:49:49   (   0.01,-128.22) (   0.34,-126.63)  180.60                80
 02/23/2019   10:14:16   (  -0.01,-128.32) (   0.82,-131.90)  408.67                80
 02/24/2019   09:52:52   (  -0.01,-128.33) (  -0.23,-127.37)  109.55                80
 02/26/2019   21:56:01   (   0.01,-128.29) (   0.03,-128.14)   17.49                80