Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2021   06:37:52   (  -0.03, -75.18) (   0.58, -77.89)  308.27                80
 04/24/2021   06:16:27   (  -0.03, -75.18) (  -0.42, -73.35)  208.41                80
 04/25/2021   18:38:23   (   0.02, -75.18) (  -0.74, -78.66)  396.07                80
 04/26/2021   18:22:18   (   0.03, -75.18) (   0.26, -74.12)  121.04                80
 04/28/2021   06:44:05   (  -0.02, -75.20) (   0.89, -79.39)  477.06                80
 04/29/2021   06:22:40   (  -0.03, -75.20) (  -0.11, -74.85)   39.94                80
 05/01/2021   18:25:50   (   0.02, -75.20) (  -0.05, -75.62)   47.00                80
 05/02/2021   18:09:45   (   0.02, -75.21) (   0.95, -71.09)  470.78                80
 05/04/2021   06:31:31   (  -0.01, -75.24) (   0.25, -76.34)  126.05                80
 05/05/2021   06:10:07   (  -0.01, -75.25) (  -0.80, -71.82)  392.02                80
 05/06/2021   18:32:02   (   0.01, -75.27) (  -0.40, -77.12)  210.61                80