Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2019   21:56:22   (   0.20,-127.95) (   0.18,-128.17)   24.73                80
 07/21/2019   21:40:18   (   0.19,-127.98) (   1.19,-123.64)  495.50                80
 07/23/2019   09:59:26   (  -0.21,-128.06) (  -0.03,-128.92)   97.61                80
 07/24/2019   09:43:22   (  -0.20,-128.08) (  -1.04,-124.38)  421.90                80
 07/25/2019   22:02:39   (   0.23,-128.09) (  -0.11,-129.70)  182.40                80
 07/26/2019   21:46:35   (   0.22,-128.12) (   0.90,-125.16)  336.87                80
 07/28/2019   10:05:43   (  -0.24,-128.18) (   0.26,-130.44)  257.13                80
 07/29/2019   09:49:38   (  -0.24,-128.20) (  -0.76,-125.91)  261.37                80
 07/30/2019   22:08:56   (   0.26,-128.19) (  -0.40,-131.22)  344.86                80
 07/31/2019   21:52:51   (   0.25,-128.20) (   0.62,-126.69)  173.48                80
 08/02/2019   10:12:00   (  -0.28,-128.26) (   0.54,-131.96)  421.24                80