Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2019   10:52:33   (   0.00,-137.20) (   0.93,-141.36)  473.67                80
 10/20/2019   10:31:09   (   0.00,-137.20) (  -0.11,-136.83)   42.28                80
 10/22/2019   22:34:20   (  -0.00,-137.18) (  -0.07,-137.61)   47.89                80
 10/23/2019   22:18:14   (   0.00,-137.17) (   0.92,-133.07)  467.62                80
 10/25/2019   10:40:02   (   0.00,-137.15) (   0.27,-138.34)  135.06                80
 10/26/2019   10:18:36   (   0.00,-137.14) (  -0.72,-133.80)  380.07                80
 10/27/2019   22:40:32   (  -0.00,-137.13) (  -0.43,-139.11)  226.41                80
 10/28/2019   22:24:27   (  -0.00,-137.11) (   0.55,-134.58)  288.47                80
 10/30/2019   10:46:14   (   0.00,-137.09) (   0.63,-139.85)  315.08                80
 10/31/2019   10:24:50   (   0.00,-137.07) (  -0.41,-135.32)  199.36                80