Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 13.  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   06:33:38   (  -0.01, -75.22) (   0.29, -76.62)  160.09                80
 12/15/2021   06:12:11   (  -0.01, -75.23) (  -0.68, -72.08)  357.98                80
 12/16/2021   18:34:07   (   0.01, -75.25) (  -0.47, -77.39)  243.79                80
 12/17/2021   18:18:01   (   0.00, -75.26) (   0.57, -72.86)  274.61                80
 12/19/2021   06:39:47   (   0.00, -75.28) (   0.65, -78.11)  323.26                80
 12/20/2021   06:18:21   (   0.01, -75.29) (  -0.39, -73.58)  195.16                80
 12/21/2021   18:40:15   (  -0.01, -75.32) (  -0.82, -78.88)  406.17                80
 12/22/2021   18:24:10   (  -0.01, -75.34) (   0.22, -74.35)  112.64                80
 12/24/2021   06:45:56   (   0.01, -75.37) (   0.93, -79.62)  484.09                80
 12/25/2021   06:24:30   (   0.01, -75.39) (  -0.04, -75.08)   34.96                80