Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 11 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/08/2021   22:10:00   (  -0.12,-128.45) (  -0.76,-131.30)  325.08                80
 11/09/2021   21:53:57   (  -0.14,-128.45) (   0.24,-126.77)  191.05                80
 11/11/2021   10:13:07   (   0.10,-128.45) (   0.91,-132.05)  410.71                80
 11/12/2021   09:57:04   (   0.12,-128.45) (  -0.09,-127.52)  105.35                80
 11/14/2021   22:00:19   (  -0.10,-128.44) (  -0.08,-128.30)   15.08                80
 11/17/2021   10:00:45   (   0.09,-128.44) (   0.22,-129.06)   70.56                80
 11/18/2021   09:44:42   (   0.10,-128.43) (  -0.79,-124.53)  445.26                80
 11/19/2021   22:04:00   (  -0.08,-128.41) (  -0.38,-129.84)  162.06                80
 11/20/2021   21:47:57   (  -0.09,-128.40) (   0.63,-125.31)  353.40                80