Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2021   18:27:58   (   0.01, -75.20) (  -0.12, -75.90)   79.08                80
 12/12/2021   18:11:51   (   0.00, -75.21) (   0.85, -71.35)  438.89                80
 12/14/2021   06:33:38   (  -0.01, -75.22) (   0.30, -76.62)  159.63                80
 12/15/2021   06:12:12   (  -0.00, -75.23) (  -0.73, -72.09)  358.56                80
 12/16/2021   18:34:07   (   0.00, -75.25) (  -0.47, -77.39)  243.07                80
 12/17/2021   18:18:01   (  -0.00, -75.27) (   0.56, -72.86)  275.43                80
 12/19/2021   06:39:46   (   0.00, -75.29) (   0.65, -78.11)  322.17                80
 12/20/2021   06:18:21   (   0.01, -75.30) (  -0.38, -73.58)  196.37                80
 12/21/2021   18:40:15   (  -0.01, -75.33) (  -0.81, -78.88)  404.78                80
 12/22/2021   18:24:10   (  -0.01, -75.35) (   0.22, -74.35)  114.11                80