Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 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)
 07/24/2019   09:43:21   (  -0.20,-128.08) (  -1.03,-124.38)  422.05                80
 07/25/2019   22:02:39   (   0.23,-128.10) (  -0.13,-129.69)  181.29                80
 07/26/2019   21:46:34   (   0.22,-128.13) (   0.88,-125.16)  338.03                80
 07/28/2019   10:05:43   (  -0.24,-128.18) (   0.27,-130.43)  256.64                80
 07/29/2019   09:49:38   (  -0.24,-128.20) (  -0.74,-125.90)  261.94                80
 07/30/2019   22:08:55   (   0.26,-128.20) (  -0.42,-131.21)  343.33                80
 07/31/2019   21:52:51   (   0.25,-128.22) (   0.60,-126.68)  175.06                80
 08/02/2019   10:11:59   (  -0.28,-128.27) (   0.55,-131.96)  420.31                80
 08/03/2019   09:55:55   (  -0.27,-128.28) (  -0.46,-127.42)   97.75                80
 08/05/2019   21:56:27   (   0.27,-128.29) (   0.27,-128.19)   10.30                80