Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 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)
 04/18/2021   06:31:40   (  -0.04, -75.20) (   0.25, -76.39)  136.22                80
 04/19/2021   06:10:16   (  -0.04, -75.19) (  -0.80, -71.86)  380.06                80
 04/20/2021   18:32:11   (   0.03, -75.18) (  -0.42, -77.16)  225.04                80
 04/21/2021   18:16:05   (   0.03, -75.18) (   0.58, -72.62)  291.75                80
 04/23/2021   06:37:53   (  -0.02, -75.20) (   0.57, -77.89)  306.72                80
 04/24/2021   06:16:27   (  -0.02, -75.20) (  -0.43, -73.35)  210.20                80
 04/25/2021   18:38:23   (   0.02, -75.19) (  -0.73, -78.66)  394.25                80
 04/26/2021   18:22:18   (   0.02, -75.20) (   0.27, -74.12)  123.09                80
 04/28/2021   06:44:04   (  -0.02, -75.22) (   0.93, -79.38)  474.43                80
 04/29/2021   06:22:40   (  -0.02, -75.23) (  -0.12, -74.86)   42.85                80
 05/01/2021   18:25:50   (   0.02, -75.23) (  -0.09, -75.61)   43.74                80