Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 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)
 04/18/2021   06:31:40   (  -0.04, -75.20) (   0.23, -76.39)  136.18                80
 04/19/2021   06:10:15   (  -0.04, -75.19) (  -0.76, -71.85)  380.05                80
 04/20/2021   18:32:11   (   0.03, -75.18) (  -0.40, -77.16)  225.29                80
 04/21/2021   18:16:06   (   0.03, -75.18) (   0.60, -72.62)  291.45                80
 04/23/2021   06:37:52   (  -0.02, -75.19) (   0.61, -77.88)  306.92                80
 04/24/2021   06:16:27   (  -0.02, -75.20) (  -0.44, -73.36)  209.97                80
 04/25/2021   18:38:23   (   0.02, -75.19) (  -0.77, -78.65)  394.68                80
 04/26/2021   18:22:18   (   0.02, -75.20) (   0.29, -74.13)  122.63                80
 04/28/2021   06:44:05   (  -0.02, -75.22) (   0.92, -79.38)  474.83                80
 04/29/2021   06:22:39   (  -0.02, -75.22) (  -0.08, -74.85)   42.50                80