Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 8 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)
 08/19/2021   06:24:02   (  -0.13, -75.21) (  -0.15, -75.09)   13.38                80
 08/21/2021   18:27:16   (   0.14, -75.20) (   0.01, -75.87)   76.22                80
 08/22/2021   18:11:11   (   0.14, -75.20) (   1.00, -71.34)  440.52                80
 08/24/2021   06:33:00   (  -0.15, -75.22) (   0.18, -76.61)  158.64                80
 08/25/2021   06:14:16   (  -0.14, -75.23) (  -0.87, -72.09)  358.53                80
 08/26/2021   18:33:34   (   0.15, -75.24) (  -0.32, -77.39)  245.46                80
 08/27/2021   18:17:29   (   0.15, -75.25) (   0.67, -72.86)  272.17                80
 08/29/2021   06:39:17   (  -0.16, -75.28) (   0.51, -78.13)  325.68                80
 08/30/2021   06:17:54   (  -0.15, -75.29) (  -0.54, -73.60)  191.96                80