Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 11 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/06/2021   10:06:45   (   0.14,-128.46) (   0.61,-130.52)  235.28                80
 11/07/2021   09:50:42   (   0.15,-128.46) (  -0.39,-125.99)  281.14                80
 11/08/2021   22:10:00   (  -0.12,-128.45) (  -0.79,-131.30)  325.26                80
 11/09/2021   21:53:57   (  -0.14,-128.45) (   0.22,-126.77)  190.88                80
 11/11/2021   10:13:07   (   0.10,-128.45) (   0.94,-132.05)  410.83                80
 11/12/2021   09:57:03   (   0.12,-128.45) (  -0.06,-127.52)  105.27                80
 11/14/2021   22:00:19   (  -0.10,-128.44) (  -0.05,-128.31)   14.90                80
 11/17/2021   10:00:45   (   0.09,-128.43) (   0.25,-129.05)   70.88                80
 11/18/2021   09:44:42   (   0.10,-128.43) (  -0.75,-124.52)  444.98                80
 11/19/2021   22:04:00   (  -0.08,-128.41) (  -0.42,-129.83)  162.50                80