Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/23/2020   21:56:03   (   0.05,-127.73) (  -0.02,-128.06)   37.24                80
 08/24/2020   21:39:59   (   0.04,-127.69) (   0.97,-123.52)  474.85                80
 08/26/2020   09:59:07   (  -0.05,-127.67) (   0.20,-128.79)  128.23                80
 08/27/2020   09:43:03   (  -0.05,-127.62) (  -0.80,-124.26)  383.36                80
 08/28/2020   22:02:20   (   0.06,-127.51) (  -0.37,-129.57)  233.44                80
 08/29/2020   21:46:15   (   0.06,-127.47) (   0.63,-125.03)  278.09                80
 08/31/2020   10:05:24   (  -0.07,-127.44) (   0.55,-130.30)  325.49                80
 09/01/2020   09:49:19   (  -0.07,-127.40) (  -0.46,-125.77)  185.98                80
 09/02/2020   22:08:36   (   0.07,-127.29) (  -0.77,-131.07)  430.99                80
 09/03/2020   21:52:31   (   0.07,-127.24) (   0.23,-126.53)   80.46                80