Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 2 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/18/2019   10:08:04   (  -0.03,-128.24) (   0.47,-130.40)  246.84                80
 02/19/2019   09:46:39   (  -0.03,-128.25) (  -0.58,-125.87)  271.94                80
 02/20/2019   22:11:15   (   0.02,-128.21) (  -0.62,-131.17)  336.78                80
 02/21/2019   21:49:49   (   0.02,-128.23) (   0.37,-126.63)  181.81                80
 02/23/2019   10:14:17   (  -0.02,-128.33) (   0.79,-131.90)  407.57                80
 02/24/2019   09:52:52   (  -0.02,-128.35) (  -0.26,-127.38)  110.83                80
 02/25/2019   22:17:27   (   0.02,-128.30) (  -0.94,-132.68)  498.60                80
 02/26/2019   21:56:02   (   0.01,-128.31) (   0.05,-128.14)   19.58                80
 03/01/2019   10:01:44   (   0.00,-128.42) (   0.12,-128.87)   52.37                80
 03/02/2019   09:40:19   (   0.00,-128.43) (  -0.94,-124.35)  465.47                80