Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 10 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/13/2020   22:40:23   (  -0.03,-137.20) (  -0.46,-139.07)  213.48                80
 10/14/2020   22:24:19   (  -0.03,-137.21) (   0.59,-134.55)  303.17                80
 10/16/2020   10:43:26   (   0.02,-137.21) (   0.59,-139.82)  297.52                80
 10/17/2020   10:27:21   (   0.03,-137.20) (  -0.40,-135.28)  218.74                80
 10/18/2020   22:46:36   (  -0.03,-137.20) (  -0.80,-140.59)  386.67                80
 10/19/2020   22:30:31   (  -0.03,-137.19) (   0.25,-136.06)  129.12                80
 10/21/2020   10:49:39   (   0.02,-137.18) (   0.92,-141.33)  473.02                80
 10/22/2020   10:33:33   (   0.02,-137.17) (  -0.07,-136.80)   42.24                80
 10/24/2020   22:34:03   (  -0.01,-137.14) (  -0.14,-137.56)   49.47                80
 10/25/2020   22:17:59   (  -0.01,-137.12) (   0.92,-133.04)  465.69                80