Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/28/2019   09:59:18   (  -0.06,-127.73) (   0.18,-128.91)  133.08                80
 01/29/2019   09:43:12   (  -0.05,-127.69) (  -0.81,-124.37)  378.96                80
 01/30/2019   22:02:27   (   0.05,-127.54) (  -0.40,-129.66)  241.87                80
 01/31/2019   21:46:22   (   0.05,-127.49) (   0.59,-125.13)  269.86                80
 02/02/2019   10:05:29   (  -0.05,-127.50) (   0.59,-130.39)  329.18                80
 02/03/2019   09:49:24   (  -0.04,-127.46) (  -0.40,-125.86)  182.33                80
 02/04/2019   22:08:39   (   0.05,-127.30) (  -0.80,-131.16)  439.01                80
 02/05/2019   21:52:34   (   0.04,-127.25) (   0.19,-126.62)   72.20                80
 02/08/2019   09:52:55   (  -0.04,-127.21) (   0.00,-127.35)   16.53                80
 02/09/2019   09:36:50   (  -0.04,-127.16) (  -0.99,-122.81)  494.56                80