Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2021   18:27:23   (   0.14, -75.21) (   0.01, -75.88)   76.24                80
 09/07/2021   18:11:19   (   0.14, -75.22) (   1.01, -71.35)  440.80                80
 09/09/2021   06:33:07   (  -0.14, -75.22) (   0.17, -76.62)  159.28                80
 09/10/2021   06:11:43   (  -0.14, -75.23) (  -0.83, -72.09)  357.85                80
 09/11/2021   18:33:40   (   0.14, -75.25) (  -0.35, -77.39)  244.77                80
 09/12/2021   18:17:36   (   0.15, -75.26) (   0.65, -72.86)  272.54                80
 09/14/2021   06:39:24   (  -0.15, -75.27) (   0.52, -78.13)  327.09                80
 09/15/2021   06:18:00   (  -0.15, -75.28) (  -0.54, -73.61)  190.16                80
 09/16/2021   18:39:58   (   0.16, -75.30) (  -0.63, -78.92)  412.10                80
 09/17/2021   18:23:53   (   0.16, -75.31) (   0.37, -74.39)  105.82                80