Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2021   06:12:12   (  -0.01, -75.22) (  -0.70, -72.08)  357.66                80
 12/16/2021   18:34:07   (   0.01, -75.25) (  -0.45, -77.39)  244.11                80
 12/17/2021   18:18:01   (   0.01, -75.26) (   0.53, -72.85)  274.20                80
 12/19/2021   06:39:47   (  -0.01, -75.27) (   0.62, -78.12)  323.95                80
 12/20/2021   06:18:20   (   0.00, -75.29) (  -0.35, -73.57)  194.40                80
 12/21/2021   18:40:16   (  -0.00, -75.31) (  -0.79, -78.88)  407.00                80
 12/22/2021   18:24:10   (  -0.00, -75.33) (   0.24, -74.35)  111.77                80
 12/24/2021   06:45:56   (   0.00, -75.36) (   0.97, -79.61)  485.24                80
 12/25/2021   06:24:30   (   0.00, -75.37) (  -0.07, -75.08)   33.67                80
 12/27/2021   18:27:39   (  -0.00, -75.43) (  -0.10, -75.85)   47.48                80
 12/28/2021   18:11:33   (  -0.00, -75.45) (   0.94, -71.32)  472.02                80