Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/24/2019   22:10:55   (  -0.03,-128.24) (  -0.68,-131.08)  324.42                80
 03/25/2019   21:49:29   (  -0.03,-128.22) (   0.32,-126.55)  190.58                80
 03/27/2019   10:11:16   (   0.04,-128.23) (   0.87,-131.81)  409.04                80
 03/28/2019   09:55:11   (   0.04,-128.21) (  -0.20,-127.29)  105.80                80
 03/30/2019   21:55:40   (  -0.05,-128.13) (  -0.05,-128.03)   10.54                80
 04/02/2019   09:58:42   (   0.05,-128.10) (   0.18,-128.77)   75.95                80
 04/03/2019   09:42:36   (   0.05,-128.08) (  -0.83,-124.24)  438.42                80
 04/04/2019   22:04:31   (  -0.05,-128.02) (  -0.42,-129.52)  172.53                80
 04/05/2019   21:43:05   (  -0.05,-127.99) (   0.59,-124.99)  341.49                80