Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2019   10:24:35   (  -0.00,-137.20) (  -0.45,-135.31)  215.82                80
 12/03/2019   22:49:10   (  -0.00,-137.19) (  -0.76,-140.61)  389.87                80
 12/04/2019   22:27:45   (   0.00,-137.18) (   0.24,-136.08)  125.98                80
 12/06/2019   10:52:11   (   0.00,-137.18) (   0.96,-141.34)  474.68                80
 12/07/2019   10:30:47   (  -0.00,-137.17) (  -0.10,-136.82)   40.93                80
 12/09/2019   22:36:36   (  -0.01,-137.14) (  -0.11,-137.58)   50.38                80
 12/10/2019   22:15:11   (  -0.00,-137.12) (   0.90,-133.04)  464.55                80
 12/12/2019   10:39:37   (   0.01,-137.10) (   0.30,-138.31)  137.82                80
 12/13/2019   10:18:13   (   0.01,-137.08) (  -0.76,-133.78)  376.47                80
 12/14/2019   22:42:47   (  -0.02,-137.04) (  -0.50,-139.07)  232.08                80