Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/23/2019   22:34:06   (  -0.00,-137.24) (  -0.09,-137.60)   41.24                80
 11/24/2019   22:18:00   (  -0.01,-137.24) (   0.90,-133.06)  475.91                80
 11/26/2019   10:39:48   (   0.01,-137.25) (   0.25,-138.34)  123.72                80
 11/27/2019   10:18:22   (   0.02,-137.25) (  -0.74,-133.80)  393.04                80
 11/28/2019   22:40:17   (  -0.02,-137.25) (  -0.46,-139.10)  211.50                80
 11/29/2019   22:21:33   (  -0.02,-137.25) (   0.59,-134.58)  304.88                80
 12/01/2019   10:45:59   (   0.02,-137.25) (   0.61,-139.84)  295.77                80
 12/02/2019   10:24:34   (   0.02,-137.24) (  -0.38,-135.30)  220.30                80
 12/03/2019   22:49:10   (  -0.03,-137.23) (  -0.76,-140.62)  385.02                80
 12/04/2019   22:27:45   (  -0.02,-137.23) (   0.24,-136.08)  130.86                80