Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 9 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/25/2019   10:02:01   (   0.31,-127.80) (   0.51,-128.73)  106.70                80
 09/26/2019   09:40:35   (   0.32,-127.76) (  -0.45,-124.19)  405.85                80
 09/27/2019   22:02:32   (  -0.30,-127.68) (  -0.72,-129.50)  207.13                80
 09/28/2019   21:46:27   (  -0.31,-127.64) (   0.31,-124.97)  305.77                80
 09/30/2019   10:05:35   (   0.29,-127.61) (   0.89,-130.23)  298.44                80
 10/01/2019   09:49:30   (   0.30,-127.57) (  -0.14,-125.70)  213.87                80
 10/02/2019   22:08:45   (  -0.28,-127.48) (  -1.09,-130.99)  400.60                80
 10/03/2019   21:52:41   (  -0.29,-127.44) (  -0.06,-126.46)  111.72                80
 10/05/2019   10:11:48   (   0.27,-127.40) (   1.26,-131.72)  492.75                80
 10/06/2019   09:55:44   (   0.28,-127.36) (   0.23,-127.19)   18.95                80