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)
 11/07/2021   09:50:42   (   0.15,-128.46) (  -0.39,-125.99)  281.15                80
 11/08/2021   22:10:01   (  -0.12,-128.45) (  -0.73,-131.31)  325.09                80
 11/09/2021   21:53:56   (  -0.14,-128.45) (   0.21,-126.77)  191.09                80
 11/11/2021   10:13:08   (   0.10,-128.45) (   0.89,-132.06)  410.73                80
 11/12/2021   09:57:04   (   0.12,-128.45) (  -0.12,-127.53)  105.39                80
 11/14/2021   22:00:19   (  -0.10,-128.44) (  -0.05,-128.31)   15.13                80
 11/17/2021   10:00:46   (   0.09,-128.44) (   0.20,-129.06)   70.65                80
 11/18/2021   09:44:41   (   0.10,-128.43) (  -0.75,-124.52)  445.25                80
 11/19/2021   22:04:00   (  -0.08,-128.41) (  -0.42,-129.83)  162.08                80