Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/19/2021   18:32:24   (   0.04, -75.20) (  -0.39, -77.22)  229.93                80
 03/20/2021   18:16:19   (   0.04, -75.20) (   0.59, -72.68)  286.66                80
 03/22/2021   06:38:06   (  -0.03, -75.21) (   0.59, -77.95)  312.91                80
 03/23/2021   06:16:41   (  -0.03, -75.21) (  -0.45, -73.43)  203.69                80
 03/24/2021   18:38:37   (   0.02, -75.20) (  -0.77, -78.72)  400.77                80
 03/25/2021   18:22:32   (   0.02, -75.21) (   0.27, -74.19)  116.41                80
 03/27/2021   06:44:19   (  -0.01, -75.23) (   0.96, -79.45)  481.84                80
 03/28/2021   06:22:54   (  -0.01, -75.23) (  -0.08, -74.92)   35.34                80
 03/30/2021   18:26:05   (   0.02, -75.24) (  -0.09, -75.69)   50.98                80
 03/31/2021   18:10:01   (   0.02, -75.26) (   0.96, -71.17)  466.69                80