Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2021   06:33:07   (  -0.14, -75.20) (   0.20, -76.61)  161.74                80
 09/10/2021   06:11:43   (  -0.14, -75.20) (  -0.85, -72.09)  354.88                80
 09/11/2021   18:33:40   (   0.14, -75.21) (  -0.32, -77.40)  248.85                80
 09/12/2021   18:17:36   (   0.15, -75.21) (   0.68, -72.86)  267.90                80
 09/14/2021   06:39:24   (  -0.15, -75.22) (   0.50, -78.13)  332.28                80
 09/15/2021   06:18:00   (  -0.15, -75.22) (  -0.50, -73.60)  184.44                80
 09/16/2021   18:39:57   (   0.16, -75.23) (  -0.67, -78.91)  418.90                80
 09/17/2021   18:23:53   (   0.16, -75.24) (   0.33, -74.37)   98.50                80
 09/19/2021   06:45:41   (  -0.16, -75.26) (   0.85, -79.64)  499.99                80
 09/20/2021   06:24:18   (  -0.16, -75.28) (  -0.21, -75.12)   17.97                80