Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 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)
 10/24/2018   22:40:34   (  -0.19,-135.35) (  -1.03,-138.97)  412.80                80
 10/25/2018   22:24:29   (  -0.20,-135.33) (   0.01,-134.44)  101.24                80
 10/27/2018   10:43:36   (   0.18,-135.34) (   1.18,-139.71)  498.76                80
 10/28/2018   10:27:32   (   0.19,-135.31) (   0.14,-135.19)   14.34                80
 10/30/2018   22:28:03   (  -0.18,-135.16) (  -0.33,-135.96)   91.00                80
 10/31/2018   22:11:57   (  -0.19,-135.12) (   0.65,-131.42)  421.76                80
 11/02/2018   10:31:05   (   0.16,-135.13) (   0.53,-136.69)  179.40                80
 11/03/2018   10:15:00   (   0.17,-135.08) (  -0.51,-132.17)  332.73                80
 11/04/2018   22:34:15   (  -0.14,-134.96) (  -0.72,-137.47)  286.64                80
 11/05/2018   22:18:10   (  -0.15,-134.92) (   0.26,-132.93)  225.85                80
 11/07/2018   10:37:18   (   0.13,-134.92) (   0.85,-138.21)  374.76                80