Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 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)
 04/19/2021   06:10:15   (  -0.04, -75.19) (  -0.77, -71.85)  380.10                80
 04/20/2021   18:32:11   (   0.03, -75.18) (  -0.39, -77.16)  224.98                80
 04/21/2021   18:16:06   (   0.03, -75.18) (   0.60, -72.62)  291.83                80
 04/23/2021   06:37:52   (  -0.02, -75.20) (   0.60, -77.88)  306.61                80
 04/24/2021   06:16:28   (  -0.02, -75.20) (  -0.45, -73.36)  210.33                80
 04/25/2021   18:38:23   (   0.02, -75.20) (  -0.76, -78.65)  394.07                80
 04/26/2021   18:22:17   (   0.02, -75.20) (   0.24, -74.11)  123.31                80
 04/28/2021   06:44:05   (  -0.02, -75.22) (   0.91, -79.39)  474.21                80
 04/29/2021   06:22:39   (  -0.02, -75.23) (  -0.09, -74.85)   43.09                80
 05/01/2021   18:25:50   (   0.02, -75.24) (  -0.06, -75.62)   43.43                80
 05/02/2021   18:09:45   (   0.02, -75.25) (   0.94, -71.08)  474.52                80