Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/16/2018   22:08:55   (  -0.08,-128.05) (  -0.81,-131.14)  352.69                80
 11/17/2018   21:52:51   (  -0.10,-128.08) (   0.21,-126.61)  167.58                80
 11/19/2018   10:12:00   (   0.07,-128.23) (   0.86,-131.90)  417.53                80
 11/20/2018   09:55:55   (   0.08,-128.26) (  -0.10,-127.36)  101.96                80
 11/22/2018   21:59:07   (  -0.07,-128.22) (  -0.08,-128.14)    9.06                80
 11/25/2018   09:59:30   (   0.07,-128.38) (   0.19,-128.89)   58.30                80
 11/26/2018   09:43:26   (   0.08,-128.40) (  -0.83,-124.37)  459.97                80
 11/27/2018   22:02:42   (  -0.05,-128.31) (  -0.36,-129.67)  154.91                80
 11/28/2018   21:46:38   (  -0.06,-128.33) (   0.67,-125.14)  363.52                80