Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/03/2019   21:52:41   (  -0.29,-127.63) (  -0.04,-126.49)  129.73                80
 10/05/2019   10:11:49   (   0.27,-127.75) (   1.18,-131.77)  458.32                80
 10/06/2019   09:55:45   (   0.27,-127.79) (   0.15,-127.24)   62.23                80
 10/08/2019   21:56:15   (  -0.26,-127.82) (  -0.33,-128.02)   23.12                80
 10/09/2019   21:40:11   (  -0.27,-127.86) (   0.71,-123.49)  497.67                80
 10/11/2019   09:59:19   (   0.25,-127.98) (   0.43,-128.78)   90.79                80
 10/12/2019   09:43:15   (   0.26,-128.02) (  -0.61,-124.25)  429.55                80
 10/13/2019   22:02:30   (  -0.24,-128.00) (  -0.61,-129.55)  176.93                80
 10/14/2019   21:46:26   (  -0.25,-128.04) (   0.43,-125.03)  343.33                80
 10/16/2019   10:05:34   (   0.23,-128.15) (   0.71,-130.31)  245.76                80
 10/17/2019   09:49:28   (   0.24,-128.18) (  -0.27,-125.77)  273.89                80