Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 2 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)
 02/15/2019   22:02:22   (   0.04,-128.11) (  -0.33,-129.66)  176.85                80
 02/16/2019   21:46:17   (   0.03,-128.13) (   0.72,-125.13)  342.10                80
 02/18/2019   10:08:04   (  -0.03,-128.24) (   0.44,-130.40)  246.68                80
 02/19/2019   09:46:39   (  -0.02,-128.25) (  -0.55,-125.87)  272.06                80
 02/20/2019   22:11:14   (   0.01,-128.21) (  -0.65,-131.16)  337.11                80
 02/21/2019   21:49:50   (   0.02,-128.22) (   0.40,-126.64)  181.40                80
 02/23/2019   10:14:17   (  -0.01,-128.33) (   0.76,-131.91)  407.83                80
 02/24/2019   09:52:52   (  -0.02,-128.34) (  -0.23,-127.37)  110.48                80
 02/25/2019   22:17:27   (   0.01,-128.29) (  -0.97,-132.67)  499.31                80
 02/26/2019   21:56:01   (   0.01,-128.30) (   0.03,-128.13)   18.92                80
 03/01/2019   10:01:44   (   0.00,-128.41) (   0.08,-128.88)   53.19                80