Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2020   10:39:10   (   0.04,-137.24) (   0.26,-138.24)  113.36                80
 01/30/2020   10:17:47   (   0.04,-137.28) (  -0.79,-133.72)  406.67                80
 01/31/2020   22:39:43   (  -0.04,-137.32) (  -0.43,-139.02)  193.39                80
 02/01/2020   22:23:39   (  -0.04,-137.36) (   0.62,-134.50)  326.48                80
 02/03/2020   10:45:28   (   0.05,-137.42) (   0.57,-139.77)  267.84                80
 02/04/2020   10:24:03   (   0.05,-137.44) (  -0.43,-135.23)  251.28                80
 02/05/2020   22:46:01   (  -0.06,-137.47) (  -0.73,-140.55)  350.66                80
 02/06/2020   22:29:56   (  -0.06,-137.49) (   0.27,-136.01)  168.11                80
 02/08/2020   10:51:44   (   0.07,-137.54) (   0.93,-141.28)  427.53                80
 02/09/2020   10:30:21   (   0.07,-137.56) (  -0.13,-136.77)   90.61                80
 02/11/2020   22:36:13   (  -0.07,-137.58) (  -0.08,-137.53)    5.89                80