Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2020   22:34:10   (  -0.06,-137.16) (  -0.13,-137.55)   44.70                80
 09/07/2020   22:18:06   (  -0.06,-137.14) (   0.87,-133.02)  470.46                80
 09/09/2020   10:37:14   (   0.05,-137.12) (   0.30,-138.29)  132.80                80
 09/10/2020   10:21:10   (   0.05,-137.10) (  -0.70,-133.76)  381.71                80
 09/11/2020   22:40:26   (  -0.05,-137.08) (  -0.52,-139.05)  225.84                80
 09/12/2020   22:24:23   (  -0.04,-137.06) (   0.54,-134.53)  288.20                80
 09/14/2020   10:43:31   (   0.03,-137.02) (   0.63,-139.80)  316.67                80
 09/15/2020   10:27:26   (   0.03,-136.99) (  -0.38,-135.27)  196.92                80
 09/16/2020   22:46:43   (  -0.02,-136.95) (  -0.84,-140.57)  411.86                80
 09/17/2020   22:30:38   (  -0.02,-136.93) (   0.17,-136.04)  101.61                80