Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/19/2021   06:37:06   (  -0.01, -75.19) (   0.65, -78.11)  332.67                80
 12/20/2021   06:21:01   (  -0.01, -75.19) (  -0.38, -73.58)  183.75                80
 12/21/2021   18:40:15   (   0.01, -75.18) (  -0.83, -78.87)  420.81                80
 12/22/2021   18:24:10   (   0.00, -75.18) (   0.21, -74.34)   95.99                80
 12/25/2021   06:24:30   (  -0.01, -75.19) (  -0.04, -75.07)   13.13                80
 12/27/2021   18:27:38   (   0.01, -75.19) (  -0.13, -75.84)   73.10                80
 12/28/2021   18:11:32   (   0.00, -75.20) (   0.85, -71.29)  444.48                80
 12/30/2021   06:33:18   (  -0.00, -75.21) (   0.30, -76.56)  154.18                80
 12/31/2021   06:11:52   (   0.01, -75.22) (  -0.68, -72.02)  363.34                80