Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2018   20:23:47   (  -0.36,-104.32) (  -0.30,-104.19)   15.65                80
 09/11/2018   08:26:51   (   0.36,-104.18) (   0.51,-104.92)   84.42                80
 09/12/2018   08:05:27   (   0.36,-104.16) (  -0.48,-100.38)  430.02                80
 09/13/2018   20:27:24   (  -0.35,-104.26) (  -0.69,-105.69)  164.21                80
 09/14/2018   20:11:21   (  -0.36,-104.25) (   0.37,-101.17)  351.82                80
 09/16/2018   08:33:09   (   0.34,-104.14) (   0.84,-106.44)  261.21                80
 09/17/2018   08:11:44   (   0.35,-104.12) (  -0.16,-101.90)  253.21                80
 09/18/2018   20:33:42   (  -0.33,-104.19) (  -1.00,-107.21)  343.90                80
 09/19/2018   20:17:37   (  -0.33,-104.19) (  -0.01,-102.68)  172.14                80
 09/21/2018   08:39:27   (   0.32,-104.11) (   1.15,-107.96)  438.08                80