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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2021   18:17:36   (   0.13, -75.20) (   0.66, -72.86)  266.85                80
 09/14/2021   06:39:24   (  -0.13, -75.20) (   0.52, -78.13)  333.50                80
 09/15/2021   06:18:00   (  -0.14, -75.20) (  -0.48, -73.59)  182.81                80
 09/16/2021   18:39:57   (   0.14, -75.20) (  -0.69, -78.90)  421.60                80
 09/17/2021   18:23:52   (   0.15, -75.21) (   0.31, -74.37)   95.38                80
 09/20/2021   06:24:17   (  -0.15, -75.24) (  -0.20, -75.12)   14.49                80
 09/22/2021   18:30:09   (   0.15, -75.27) (  -0.02, -75.88)   70.39                80
 09/23/2021   18:11:26   (   0.15, -75.29) (   1.04, -71.36)  447.90                80
 09/25/2021   06:33:14   (  -0.15, -75.32) (   0.13, -76.63)  149.09                80