Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/25/2020   10:01:33   (   0.01,-128.42) (   0.11,-128.78)   41.65                80
 07/26/2020   09:40:10   (   0.01,-128.43) (  -0.94,-124.26)  474.97                80
 07/27/2020   22:02:07   (  -0.01,-128.38) (  -0.25,-129.57)  135.31                80
 07/28/2020   21:46:03   (  -0.01,-128.38) (   0.74,-125.03)  381.12                80
 07/30/2020   10:07:51   (   0.02,-128.43) (   0.45,-130.30)  213.63                80
 07/31/2020   09:46:27   (   0.02,-128.43) (  -0.55,-125.77)  302.31                80
 08/01/2020   22:08:24   (  -0.02,-128.36) (  -0.64,-131.07)  309.18                80
 08/02/2020   21:52:19   (  -0.03,-128.36) (   0.35,-126.54)  206.69                80
 08/04/2020   10:14:09   (   0.03,-128.41) (   0.77,-131.82)  388.51                80
 08/05/2020   09:52:44   (   0.03,-128.40) (  -0.22,-127.29)  127.15                80