Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2018   08:26:51   (   0.36,-104.18) (   0.52,-104.92)   84.47                80
 09/12/2018   08:05:27   (   0.36,-104.16) (  -0.47,-100.38)  429.97                80
 09/13/2018   20:27:24   (  -0.35,-104.25) (  -0.70,-105.69)  164.22                80
 09/14/2018   20:11:20   (  -0.36,-104.25) (   0.36,-101.17)  351.80                80
 09/16/2018   08:33:09   (   0.34,-104.14) (   0.85,-106.43)  261.27                80
 09/17/2018   08:11:44   (   0.35,-104.12) (  -0.15,-101.90)  253.15                80
 09/18/2018   20:33:42   (  -0.33,-104.19) (  -1.01,-107.21)  343.91                80
 09/19/2018   20:17:37   (  -0.33,-104.19) (  -0.02,-102.68)  172.14                80
 09/21/2018   08:39:26   (   0.32,-104.11) (   1.16,-107.95)  438.14                80
 09/22/2018   08:18:02   (   0.32,-104.09) (   0.17,-103.42)   76.41                80