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)
 12/09/2021   06:24:48   (  -0.00, -75.18) (   0.00, -75.12)    6.75                80
 12/11/2021   18:27:58   (   0.01, -75.20) (  -0.12, -75.89)   79.13                80
 12/12/2021   18:11:51   (   0.00, -75.20) (   0.85, -71.35)  438.79                80
 12/14/2021   06:30:58   (  -0.01, -75.22) (   0.31, -76.62)  159.85                80
 12/15/2021   06:14:52   (  -0.00, -75.23) (  -0.72, -72.09)  358.32                80
 12/16/2021   18:34:07   (   0.00, -75.25) (  -0.48, -77.38)  243.28                80
 12/17/2021   18:18:01   (  -0.00, -75.27) (   0.55, -72.85)  275.18                80
 12/19/2021   06:39:46   (   0.01, -75.29) (   0.66, -78.11)  322.55                80
 12/20/2021   06:18:21   (   0.01, -75.30) (  -0.38, -73.58)  195.97                80
 12/21/2021   18:40:15   (  -0.01, -75.33) (  -0.82, -78.88)  405.13                80
 12/22/2021   18:24:10   (  -0.01, -75.35) (   0.21, -74.35)  113.72                80