Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 10 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/27/2017   22:28:12   (  -0.14,-134.91) (  -0.41,-136.00)  124.14                80
 10/28/2017   22:12:08   (  -0.15,-134.88) (   0.62,-131.47)  388.62                80
 10/30/2017   10:31:15   (   0.13,-134.90) (   0.57,-136.74)  210.78                80
 10/31/2017   10:15:10   (   0.14,-134.85) (  -0.46,-132.21)  301.25                80
 11/01/2017   22:34:27   (  -0.11,-134.71) (  -0.73,-137.52)  319.90                80
 11/02/2017   22:18:21   (  -0.13,-134.67) (   0.24,-132.98)  192.16                80
 11/04/2017   10:37:30   (   0.10,-134.68) (   0.88,-138.26)  407.55                80
 11/05/2017   10:21:24   (   0.12,-134.63) (  -0.09,-133.72)  103.58                80
 11/07/2017   22:21:55   (  -0.11,-134.41) (  -0.12,-134.49)    8.90                80