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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/11/2021   10:13:07   (   0.10,-128.45) (   0.94,-132.05)  410.87                80
 11/12/2021   09:57:03   (   0.12,-128.45) (  -0.07,-127.52)  105.13                80
 11/14/2021   22:00:19   (  -0.10,-128.43) (  -0.05,-128.31)   14.80                80
 11/17/2021   10:00:45   (   0.09,-128.43) (   0.25,-129.05)   71.29                80
 11/18/2021   09:44:42   (   0.10,-128.42) (  -0.76,-124.52)  444.45                80
 11/19/2021   22:04:00   (  -0.08,-128.40) (  -0.42,-129.83)  163.03                80
 11/20/2021   21:47:56   (  -0.09,-128.39) (   0.59,-125.30)  352.34                80
 11/22/2021   10:07:07   (   0.06,-128.38) (   0.55,-130.58)  250.70                80
 11/23/2021   09:51:03   (   0.08,-128.37) (  -0.46,-126.05)  264.16                80
 11/24/2021   22:10:22   (  -0.05,-128.34) (  -0.71,-131.36)  344.62                80