Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 6.  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, -75.19) (   0.00, -75.88)   78.08                80
 09/07/2021   18:11:19   (   0.14, -75.19) (   1.00, -71.35)  437.86                80
 09/09/2021   06:33:07   (  -0.14, -75.18) (   0.17, -76.62)  163.94                80
 09/10/2021   06:11:43   (  -0.14, -75.18) (  -0.82, -72.08)  352.10                80
 09/11/2021   18:33:40   (   0.14, -75.18) (  -0.35, -77.39)  252.15                80
 09/12/2021   18:17:36   (   0.15, -75.18) (   0.65, -72.86)  264.04                80
 09/14/2021   06:39:24   (  -0.15, -75.17) (   0.53, -78.13)  337.30                80
 09/15/2021   06:18:00   (  -0.15, -75.17) (  -0.53, -73.61)  178.87                80
 09/16/2021   18:39:57   (   0.16, -75.18) (  -0.70, -78.90)  425.03                80
 09/17/2021   18:23:53   (   0.16, -75.18) (   0.36, -74.38)   91.82                80