Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2021   06:39:24   (  -0.13, -75.20) (   0.50, -78.13)  333.64                80
 09/15/2021   06:18:00   (  -0.14, -75.20) (  -0.50, -73.60)  182.61                80
 09/16/2021   18:39:57   (   0.14, -75.20) (  -0.67, -78.91)  421.95                80
 09/17/2021   18:23:53   (   0.15, -75.21) (   0.33, -74.37)   94.96                80
 09/20/2021   06:24:16   (  -0.15, -75.23) (  -0.16, -75.11)   13.86                80
 09/22/2021   18:27:29   (   0.15, -75.26) (   0.00, -75.89)   70.96                80
 09/23/2021   18:11:25   (   0.15, -75.28) (   1.01, -71.35)  447.21                80
 09/25/2021   06:33:13   (  -0.15, -75.31) (   0.17, -76.62)  149.74                80
 09/26/2021   06:11:50   (  -0.15, -75.33) (  -0.90, -72.10)  368.45                80
 09/27/2021   18:36:26   (   0.15, -75.35) (  -0.32, -77.40)  233.46                80