Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/12/2020   22:02:14   (   0.02,-128.11) (  -0.30,-129.57)  166.05                80
 08/13/2020   21:46:10   (   0.02,-128.08) (   0.70,-125.04)  346.91                80
 08/15/2020   10:05:18   (  -0.02,-128.07) (   0.48,-130.31)  255.06                80
 08/16/2020   09:49:14   (  -0.02,-128.04) (  -0.52,-125.78)  257.34                80
 08/17/2020   22:08:31   (   0.03,-127.94) (  -0.66,-131.08)  358.09                80
 08/18/2020   21:52:27   (   0.03,-127.90) (   0.33,-126.55)  154.15                80
 08/20/2020   10:11:35   (  -0.03,-127.88) (   0.84,-131.82)  448.52                80
 08/21/2020   09:55:30   (  -0.03,-127.84) (  -0.16,-127.29)   63.47                80
 08/23/2020   21:56:02   (   0.03,-127.69) (  -0.08,-128.05)   41.01                80
 08/24/2020   21:39:58   (   0.03,-127.65) (   0.93,-123.51)  470.73                80