Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 3 19.  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) (  -0.42, -77.22)  229.91                80
 03/20/2021   18:16:19   (   0.04, -75.20) (   0.62, -72.69)  286.69                80
 03/22/2021   06:38:06   (  -0.04, -75.21) (   0.56, -77.96)  312.78                80
 03/23/2021   06:16:41   (  -0.03, -75.21) (  -0.42, -73.42)  203.83                80
 03/24/2021   18:38:37   (   0.02, -75.21) (  -0.74, -78.73)  400.68                80
 03/25/2021   18:22:32   (   0.02, -75.21) (   0.24, -74.19)  116.49                80
 03/27/2021   06:44:19   (  -0.01, -75.23) (   0.93, -79.45)  481.60                80
 03/28/2021   06:22:55   (  -0.01, -75.23) (  -0.11, -74.93)   35.74                80
 03/30/2021   18:26:05   (   0.02, -75.25) (  -0.06, -75.70)   50.84                80
 03/31/2021   18:10:00   (   0.02, -75.26) (   0.93, -71.16)  466.91                80