Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 6 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)
 06/18/2021   18:26:30   (   0.03, -75.26) (  -0.08, -75.74)   54.62                80
 06/19/2021   18:10:26   (   0.03, -75.26) (   0.95, -71.21)  461.75                80
 06/21/2021   06:29:35   (  -0.04, -75.25) (   0.22, -76.49)  140.37                80
 06/22/2021   06:13:31   (  -0.04, -75.25) (  -0.75, -71.95)  375.95                80
 06/23/2021   18:32:49   (   0.05, -75.27) (  -0.39, -77.27)  227.73                80
 06/24/2021   18:16:45   (   0.04, -75.27) (   0.59, -72.73)  288.92                80
 06/26/2021   06:35:54   (  -0.05, -75.27) (   0.58, -78.01)  312.37                80
 06/27/2021   06:19:51   (  -0.05, -75.28) (  -0.45, -73.48)  204.62                80
 06/28/2021   18:39:08   (   0.06, -75.30) (  -0.74, -78.79)  397.95                80
 06/29/2021   18:23:04   (   0.05, -75.31) (   0.30, -74.27)  119.83                80