Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 3 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/14/2021   18:26:11   (   0.04, -75.20) (  -0.06, -75.72)   58.49                80
 03/15/2021   18:10:05   (   0.04, -75.21) (   0.92, -71.18)  458.74                80
 03/17/2021   06:31:52   (  -0.04, -75.22) (   0.27, -76.45)  140.69                80
 03/18/2021   06:10:28   (  -0.04, -75.22) (  -0.77, -71.92)  376.54                80
 03/19/2021   18:32:24   (   0.04, -75.24) (  -0.39, -77.23)  226.24                80
 03/20/2021   18:16:19   (   0.03, -75.25) (   0.59, -72.69)  291.42                80
 03/22/2021   06:38:06   (  -0.03, -75.26) (   0.59, -77.95)  306.95                80
 03/23/2021   06:16:42   (  -0.02, -75.27) (  -0.45, -73.43)  210.69                80
 03/24/2021   18:38:37   (   0.02, -75.29) (  -0.77, -78.72)  391.70                80
 03/25/2021   18:22:32   (   0.01, -75.30) (   0.27, -74.19)  126.50                80