Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2018   18:39:00   (   0.00, -75.19) (  -0.80, -78.68)  398.14                80
 06/21/2018   18:22:56   (   0.00, -75.19) (   0.23, -74.15)  118.59                80
 06/23/2018   06:44:43   (  -0.00, -75.20) (   0.96, -79.42)  480.76                80
 06/24/2018   06:23:18   (  -0.01, -75.21) (  -0.08, -74.89)   36.24                80
 06/26/2018   18:26:30   (   0.01, -75.22) (  -0.07, -75.66)   50.13                80
 06/27/2018   18:10:25   (   0.02, -75.23) (   0.91, -71.12)  467.36                80
 06/29/2018   06:32:13   (  -0.02, -75.25) (   0.22, -76.40)  130.93                80
 06/30/2018   06:10:48   (  -0.02, -75.26) (  -0.76, -71.86)  386.88                80
 07/01/2018   18:32:44   (   0.02, -75.27) (  -0.42, -77.16)  215.62                80
 07/02/2018   18:16:39   (   0.02, -75.29) (   0.62, -72.63)  302.66                80