Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 12 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2017   18:08:14   (  -0.01, -75.23) (   0.85, -71.27)  451.12                80
 12/19/2017   06:30:01   (   0.02, -75.20) (   0.32, -76.54)  152.44                80
 12/20/2017   06:13:56   (   0.02, -75.21) (  -0.67, -72.00)  364.94                80
 12/21/2017   18:35:52   (  -0.03, -75.26) (  -0.47, -77.31)  233.62                80
 12/22/2017   18:14:27   (  -0.03, -75.27) (   0.52, -72.77)  283.87                80
 12/24/2017   06:36:14   (   0.03, -75.24) (   0.65, -78.04)  319.08                80
 12/25/2017   06:20:09   (   0.03, -75.26) (  -0.34, -73.51)  198.89                80
 12/26/2017   18:42:05   (  -0.03, -75.32) (  -0.79, -78.82)  398.38                80
 12/27/2017   18:20:39   (  -0.03, -75.33) (   0.20, -74.28)  119.67                80
 12/29/2017   06:42:27   (   0.04, -75.31) (   0.98, -79.55)  482.81                80
 12/30/2017   06:26:21   (   0.04, -75.33) (  -0.02, -75.02)   35.52                80