Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2018   08:20:12   (  -0.21,-104.36) (  -0.40,-103.46)  102.51                80
 07/21/2018   20:39:31   (   0.24,-104.53) (  -0.70,-108.79)  485.30                80
 07/22/2018   20:23:26   (   0.23,-104.54) (   0.28,-104.25)   32.01                80
 07/25/2018   08:23:51   (  -0.25,-104.40) (  -0.11,-105.00)   68.03                80
 07/26/2018   08:07:48   (  -0.24,-104.40) (  -1.15,-100.47)  449.02                80
 07/27/2018   20:27:06   (   0.27,-104.57) (  -0.00,-105.79)  138.89                80
 07/28/2018   20:11:02   (   0.26,-104.58) (   0.98,-101.25)  378.48                80
 07/30/2018   08:30:11   (  -0.29,-104.44) (   0.16,-106.53)  238.05                80
 07/31/2018   08:14:06   (  -0.27,-104.44) (  -0.82,-101.99)  279.13                80
 08/01/2018   20:33:25   (   0.30,-104.60) (  -0.33,-107.31)  309.04                80