Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2018   06:14:03   (   0.01, -75.25) (  -0.70, -71.99)  371.00                80
 11/22/2018   18:33:21   (  -0.01, -75.25) (  -0.44, -77.31)  234.16                80
 11/23/2018   18:17:15   (  -0.01, -75.25) (   0.52, -72.77)  282.55                80
 11/25/2018   06:39:04   (   0.01, -75.26) (   0.61, -78.05)  316.90                80
 11/26/2018   06:17:39   (   0.01, -75.27) (  -0.41, -73.52)  199.79                80
 11/27/2018   18:39:35   (  -0.00, -75.27) (  -0.78, -78.83)  405.14                80
 11/28/2018   18:23:31   (  -0.00, -75.28) (   0.24, -74.30)  111.88                80
 11/30/2018   06:45:18   (  -0.00, -75.30) (   0.95, -79.57)  486.55                80
 12/01/2018   06:23:54   (  -0.00, -75.31) (  -0.07, -75.04)   30.92                80
 12/03/2018   18:27:06   (   0.01, -75.34) (  -0.09, -75.82)   54.64                80
 12/04/2018   18:11:01   (   0.01, -75.35) (   0.94, -71.29)  463.43                80