Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/03/2019   10:05:17   (   0.01,-128.33) (   0.48,-130.35)  230.33                80
 12/04/2019   09:49:11   (   0.02,-128.31) (  -0.52,-125.81)  284.19                80
 12/05/2019   22:08:27   (  -0.00,-128.24) (  -0.63,-131.12)  328.23                80
 12/06/2019   21:52:22   (  -0.01,-128.22) (   0.37,-126.59)  186.15                80
 12/08/2019   10:11:28   (  -0.01,-128.22) (   0.83,-131.85)  414.70                80
 12/09/2019   09:55:23   (   0.00,-128.19) (  -0.17,-127.31)   99.36                80
 12/11/2019   21:58:34   (   0.00,-128.08) (   0.03,-128.09)    3.12                80
 12/14/2019   09:58:54   (  -0.01,-128.03) (   0.17,-128.82)   89.66                80
 12/15/2019   09:42:49   (   0.00,-128.00) (  -0.83,-124.28)  423.16                80