Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/13/2020   09:59:13   (  -0.14,-128.41) (  -0.02,-128.85)   51.19                80
 10/14/2020   09:43:09   (  -0.14,-128.40) (  -1.07,-124.33)  464.40                80
 10/15/2020   22:05:04   (   0.14,-128.38) (  -0.13,-129.63)  142.77                80
 10/16/2020   21:43:39   (   0.14,-128.37) (   0.86,-125.10)  372.34                80
 10/18/2020   10:05:26   (  -0.13,-128.36) (   0.32,-130.37)  228.89                80
 10/19/2020   09:49:21   (  -0.14,-128.35) (  -0.67,-125.83)  286.02                80
 10/20/2020   22:11:16   (   0.13,-128.31) (  -0.52,-131.13)  321.92                80
 10/21/2020   21:49:51   (   0.14,-128.29) (   0.53,-126.61)  192.32                80
 10/23/2020   10:14:19   (  -0.13,-128.27) (   0.65,-131.88)  410.32                80
 10/24/2020   09:52:53   (  -0.14,-128.26) (  -0.34,-127.35)  104.00                80
 10/26/2020   21:56:03   (   0.14,-128.20) (   0.14,-128.11)   10.20                80