Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 7 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/19/2018   08:36:16   (  -0.23,-104.36) (   0.56,-108.00)  414.60                80
 07/20/2018   08:20:12   (  -0.21,-104.37) (  -0.41,-103.47)  102.55                80
 07/21/2018   20:39:31   (   0.24,-104.53) (  -0.69,-108.79)  485.19                80
 07/22/2018   20:23:27   (   0.23,-104.54) (   0.29,-104.26)   32.10                80
 07/25/2018   08:23:52   (  -0.25,-104.40) (  -0.13,-105.00)   67.74                80
 07/26/2018   08:07:47   (  -0.24,-104.41) (  -1.10,-100.46)  449.35                80
 07/27/2018   20:27:06   (   0.27,-104.57) (   0.01,-105.79)  138.49                80
 07/28/2018   20:11:02   (   0.26,-104.58) (   0.99,-101.25)  378.92                80
 07/30/2018   08:30:11   (  -0.29,-104.44) (   0.15,-106.53)  237.55                80
 07/31/2018   08:14:07   (  -0.27,-104.45) (  -0.83,-102.00)  279.70                80