Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2021   18:23:53   (   0.13, -75.20) (   0.33, -74.37)   95.06                80
 09/20/2021   06:24:16   (  -0.13, -75.22) (  -0.16, -75.11)   13.43                80
 09/22/2021   18:27:29   (   0.13, -75.25) (  -0.00, -75.88)   71.70                80
 09/23/2021   18:11:25   (   0.13, -75.27) (   1.00, -71.35)  446.33                80
 09/25/2021   06:33:13   (  -0.13, -75.30) (   0.17, -76.62)  150.90                80
 09/26/2021   06:11:49   (  -0.13, -75.31) (  -0.83, -72.09)  367.11                80
 09/27/2021   18:36:26   (   0.13, -75.33) (  -0.32, -77.40)  235.03                80
 09/28/2021   18:15:01   (   0.14, -75.35) (   0.68, -72.87)  283.29                80
 09/30/2021   06:39:30   (  -0.13, -75.39) (   0.49, -78.14)  313.15                80