Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2019   09:43:12   (  -0.05,-127.69) (  -0.79,-124.36)  378.54                80
 01/30/2019   22:02:27   (   0.05,-127.53) (  -0.42,-129.66)  242.08                80
 01/31/2019   21:46:22   (   0.05,-127.49) (   0.57,-125.12)  269.49                80
 02/02/2019   10:05:29   (  -0.05,-127.50) (   0.61,-130.39)  330.15                80
 02/03/2019   09:49:23   (  -0.04,-127.45) (  -0.38,-125.85)  181.26                80
 02/04/2019   22:08:39   (   0.05,-127.29) (  -0.82,-131.15)  439.88                80
 02/05/2019   21:52:33   (   0.04,-127.24) (   0.17,-126.61)   71.20                80
 02/08/2019   09:52:56   (  -0.05,-127.19) (  -0.04,-127.36)   18.50                80
 02/09/2019   09:36:51   (  -0.04,-127.14) (  -1.03,-122.82)  492.68                80
 02/10/2019   21:58:45   (   0.04,-126.98) (  -0.22,-128.10)  129.02                80