Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/01/2019   21:46:10   (  -0.04,-128.33) (   0.71,-125.08)  370.00                80
 12/03/2019   10:05:16   (   0.01,-128.33) (   0.49,-130.34)  230.32                80
 12/04/2019   09:49:12   (   0.02,-128.31) (  -0.56,-125.82)  284.25                80
 12/05/2019   22:08:27   (  -0.00,-128.24) (  -0.64,-131.12)  328.18                80
 12/06/2019   21:52:22   (  -0.01,-128.22) (   0.36,-126.59)  186.21                80
 12/08/2019   10:11:29   (  -0.01,-128.22) (   0.79,-131.86)  414.57                80
 12/09/2019   09:55:24   (   0.00,-128.19) (  -0.21,-127.32)   99.51                80
 12/11/2019   21:58:33   (   0.00,-128.08) (   0.02,-128.09)    1.74                80
 12/14/2019   09:58:54   (  -0.00,-128.03) (   0.18,-128.82)   89.42                80
 12/15/2019   09:42:49   (   0.00,-128.00) (  -0.82,-124.28)  423.44                80