Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 11 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/30/2019   22:02:15   (  -0.03,-128.34) (  -0.32,-129.61)  144.72                80
 12/01/2019   21:46:10   (  -0.04,-128.33) (   0.68,-125.08)  369.99                80
 12/03/2019   10:05:17   (   0.01,-128.33) (   0.47,-130.35)  230.21                80
 12/04/2019   09:49:11   (   0.02,-128.31) (  -0.53,-125.82)  284.36                80
 12/05/2019   22:08:27   (  -0.00,-128.24) (  -0.67,-131.11)  328.02                80
 12/06/2019   21:52:21   (  -0.01,-128.22) (   0.32,-126.58)  186.44                80
 12/08/2019   10:11:29   (  -0.01,-128.22) (   0.82,-131.85)  414.29                80
 12/09/2019   09:55:23   (   0.00,-128.20) (  -0.18,-127.32)   99.80                80
 12/11/2019   21:55:53   (  -0.00,-128.09) (  -0.02,-128.08)    2.06                80
 12/14/2019   09:58:55   (  -0.00,-128.04) (   0.16,-128.82)   88.92                80