Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/23/2019   09:48:59   (   0.03,-128.29) (  -0.52,-125.79)  285.34                80
 03/24/2019   22:10:55   (  -0.03,-128.24) (  -0.68,-131.08)  324.43                80
 03/25/2019   21:49:29   (  -0.03,-128.22) (   0.32,-126.55)  190.62                80
 03/27/2019   10:11:16   (   0.04,-128.23) (   0.87,-131.81)  408.65                80
 03/28/2019   09:55:11   (   0.04,-128.21) (  -0.20,-127.29)  106.25                80
 03/30/2019   21:55:41   (  -0.05,-128.13) (   0.00,-128.05)   10.89                80
 04/02/2019   09:58:42   (   0.05,-128.11) (   0.18,-128.77)   75.20                80
 04/03/2019   09:42:36   (   0.05,-128.09) (  -0.83,-124.24)  439.19                80
 04/04/2019   22:04:32   (  -0.05,-128.02) (  -0.36,-129.54)  171.91                80