Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/25/2021   06:11:36   (  -0.13, -75.20) (  -0.85, -72.08)  355.85                80
 08/26/2021   18:33:33   (   0.14, -75.20) (  -0.34, -77.38)  248.59                80
 08/27/2021   18:17:29   (   0.13, -75.20) (   0.65, -72.85)  268.11                80
 08/29/2021   06:39:17   (  -0.14, -75.21) (   0.53, -78.12)  332.01                80
 08/30/2021   06:17:53   (  -0.14, -75.21) (  -0.53, -73.60)  184.69                80
 08/31/2021   18:39:51   (   0.15, -75.22) (  -0.66, -78.90)  419.44                80
 09/01/2021   18:23:46   (   0.15, -75.23) (   0.34, -74.37)   97.56                80
 09/04/2021   06:24:11   (  -0.16, -75.25) (  -0.21, -75.12)   15.65                80
 09/06/2021   18:27:24   (   0.17, -75.27) (   0.03, -75.89)   70.30                80
 09/07/2021   18:11:19   (   0.17, -75.29) (   1.03, -71.36)  447.58                80