Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 5 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/11/2021   18:41:11   (   0.02, -75.20) (  -0.78, -78.67)  395.86                80
 05/12/2021   18:19:47   (   0.02, -75.21) (   0.25, -74.15)  121.21                80
 05/14/2021   06:44:16   (  -0.02, -75.22) (   0.90, -79.42)  478.71                80
 05/15/2021   06:22:52   (  -0.02, -75.23) (  -0.08, -74.89)   38.56                80
 05/17/2021   18:28:46   (   0.01, -75.27) (  -0.10, -75.67)   46.19                80
 05/18/2021   18:07:22   (   0.01, -75.28) (   0.94, -71.14)  471.52                80
 05/20/2021   06:31:51   (  -0.01, -75.30) (   0.27, -76.41)  127.46                80
 05/21/2021   06:10:27   (  -0.01, -75.31) (  -0.77, -71.89)  390.56                80
 05/22/2021   18:35:04   (   0.01, -75.35) (  -0.43, -77.19)  210.43                80
 05/23/2021   18:13:41   (   0.01, -75.37) (   0.61, -72.67)  307.88                80