Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2021   06:30:57   (  -0.02, -75.21) (   0.32, -76.62)  160.34                80
 12/15/2021   06:12:12   (  -0.01, -75.22) (  -0.71, -72.09)  357.61                80
 12/16/2021   18:34:06   (   0.01, -75.24) (  -0.49, -77.38)  244.22                80
 12/17/2021   18:18:01   (   0.00, -75.26) (   0.54, -72.85)  274.08                80
 12/19/2021   06:39:47   (  -0.00, -75.27) (   0.61, -78.12)  324.11                80
 12/20/2021   06:18:21   (   0.00, -75.28) (  -0.36, -73.58)  194.21                80
 12/21/2021   18:40:16   (  -0.00, -75.31) (  -0.78, -78.89)  407.20                80
 12/22/2021   18:24:09   (  -0.00, -75.33) (   0.20, -74.34)  111.54                80
 12/24/2021   06:45:56   (   0.00, -75.35) (   0.95, -79.61)  485.50                80
 12/25/2021   06:24:30   (   0.00, -75.37) (  -0.08, -75.08)   33.46                80
 12/27/2021   18:27:39   (  -0.00, -75.43) (  -0.08, -75.85)   47.82                80