Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 7 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2018   20:39:31   (   0.24,-104.53) (  -0.72,-108.79)  485.33                80
 07/22/2018   20:23:27   (   0.23,-104.54) (   0.32,-104.26)   31.98                80
 07/25/2018   08:23:51   (  -0.25,-104.40) (  -0.09,-104.99)   68.26                80
 07/26/2018   08:07:48   (  -0.24,-104.40) (  -1.13,-100.47)  448.77                80
 07/27/2018   20:27:06   (   0.27,-104.57) (  -0.02,-105.78)  139.20                80
 07/28/2018   20:11:02   (   0.26,-104.57) (   1.01,-101.26)  378.13                80
 07/30/2018   08:30:11   (  -0.29,-104.43) (   0.19,-106.52)  238.46                80
 07/31/2018   08:14:07   (  -0.27,-104.44) (  -0.84,-102.00)  278.67                80
 08/01/2018   20:33:25   (   0.30,-104.60) (  -0.31,-107.32)  309.59                80
 08/02/2018   20:17:21   (   0.29,-104.61) (   0.67,-102.78)  207.87                80