Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 6 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2021   06:29:35   (  -0.04, -75.18) (   0.25, -76.48)  147.83                80
 06/22/2021   06:13:31   (  -0.04, -75.17) (  -0.78, -71.96)  366.73                80
 06/23/2021   18:32:49   (   0.05, -75.15) (  -0.42, -77.26)  240.34                80
 06/24/2021   18:16:44   (   0.04, -75.14) (   0.56, -72.72)  274.56                80
 06/26/2021   06:35:54   (  -0.05, -75.12) (   0.61, -78.00)  328.65                80
 06/27/2021   06:19:50   (  -0.05, -75.11) (  -0.42, -73.48)  186.57                80
 06/28/2021   18:39:07   (   0.06, -75.10) (  -0.78, -78.78)  419.45                80
 06/29/2021   18:23:04   (   0.05, -75.10) (   0.26, -74.26)   96.59                80
 07/02/2021   06:23:29   (  -0.06, -75.10) (  -0.06, -74.99)   12.05                80