Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 11 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2021   10:00:45   (   0.09,-128.42) (   0.24,-129.05)   72.43                80
 11/18/2021   09:44:42   (   0.10,-128.41) (  -0.77,-124.52)  443.00                80
 11/19/2021   22:04:00   (  -0.08,-128.39) (  -0.41,-129.83)  164.27                80
 11/20/2021   21:47:57   (  -0.09,-128.38) (   0.60,-125.30)  350.85                80
 11/22/2021   10:07:07   (   0.06,-128.36) (   0.54,-130.58)  253.07                80
 11/23/2021   09:51:02   (   0.08,-128.34) (  -0.41,-126.04)  261.55                80
 11/24/2021   22:10:22   (  -0.05,-128.31) (  -0.71,-131.36)  347.18                80
 11/25/2021   21:54:17   (  -0.06,-128.29) (   0.25,-126.82)  167.25                80
 11/27/2021   10:13:27   (   0.03,-128.27) (   0.89,-132.10)  437.29                80
 11/28/2021   09:57:24   (   0.04,-128.25) (  -0.12,-127.57)   76.81                80