Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 11 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2019   22:46:39   (  -0.00,-137.21) (  -0.74,-140.63)  389.69                80
 11/18/2019   22:30:34   (   0.01,-137.20) (   0.25,-136.09)  125.98                80
 11/20/2019   10:52:21   (  -0.01,-137.19) (   0.90,-141.37)  475.87                80
 11/21/2019   10:30:55   (  -0.01,-137.18) (  -0.09,-136.83)   39.49                80
 11/23/2019   22:34:06   (   0.01,-137.15) (  -0.06,-137.61)   51.34                80
 11/24/2019   22:18:01   (   0.01,-137.14) (   0.93,-133.07)  463.97                80
 11/26/2019   10:39:47   (   0.01,-137.12) (   0.28,-138.33)  138.64                80
 11/27/2019   10:18:22   (   0.00,-137.10) (  -0.71,-133.80)  375.96                80
 11/28/2019   22:42:57   (  -0.01,-137.07) (  -0.49,-139.10)  231.50                80
 11/29/2019   22:21:32   (  -0.00,-137.05) (   0.57,-134.57)  282.83                80