Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2019   10:11:48   (  -0.12,-127.87) (   0.81,-131.90)  459.99                80
 07/02/2019   09:55:43   (  -0.11,-127.83) (  -0.20,-127.37)   52.52                80
 07/04/2019   21:56:16   (   0.12,-127.73) (   0.04,-128.14)   46.61                80
 07/05/2019   21:40:12   (   0.11,-127.69) (   1.05,-123.61)  465.83                80
 07/07/2019   09:59:20   (  -0.13,-127.63) (   0.12,-128.88)  142.01                80
 07/08/2019   09:43:14   (  -0.12,-127.59) (  -0.82,-124.34)  370.02                80
 07/09/2019   22:02:32   (   0.15,-127.52) (  -0.34,-129.65)  242.58                80
 07/10/2019   21:46:27   (   0.14,-127.48) (   0.67,-125.12)  269.51                80
 07/12/2019   10:05:36   (  -0.17,-127.42) (   0.50,-130.39)  338.30                80
 07/13/2019   09:49:31   (  -0.16,-127.37) (  -0.50,-125.85)  173.15                80