Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2018   18:26:42   (  -0.03, -75.20) (  -0.16, -75.75)   62.33                80
 01/18/2018   18:07:56   (  -0.03, -75.21) (   0.84, -71.21)  454.51                80
 01/20/2018   06:32:23   (   0.04, -75.18) (   0.31, -76.49)  148.03                80
 01/21/2018   06:10:58   (   0.04, -75.19) (  -0.69, -71.95)  369.07                80
 01/22/2018   18:32:53   (  -0.04, -75.22) (  -0.49, -77.25)  231.06                80
 01/23/2018   18:14:08   (  -0.04, -75.23) (   0.51, -72.71)  286.39                80
 01/25/2018   06:38:35   (   0.04, -75.22) (   0.65, -77.99)  315.25                80
 01/26/2018   06:17:10   (   0.05, -75.22) (  -0.35, -73.45)  202.26                80
 01/27/2018   18:39:05   (  -0.05, -75.26) (  -0.82, -78.75)  397.49                80
 01/28/2018   18:20:19   (  -0.05, -75.27) (   0.18, -74.22)  120.24                80
 01/30/2018   06:44:46   (   0.06, -75.26) (   1.03, -79.47)  480.72                80
 01/31/2018   06:23:21   (   0.06, -75.27) (  -0.03, -74.95)   37.26                80