Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2023   10:53:44   (   0.00,-137.28) (   0.89,-141.34)  462.49                80
 01/16/2023   10:32:20   (   0.00,-137.27) (  -0.09,-136.81)   52.35                80
 01/18/2023   22:35:34   (  -0.00,-137.22) (  -0.07,-137.58)   40.68                80
 01/19/2023   22:19:29   (  -0.01,-137.20) (   0.91,-133.05)  473.36                80
 01/21/2023   10:41:18   (   0.01,-137.16) (   0.29,-138.31)  131.01                80
 01/22/2023   10:19:54   (   0.01,-137.14) (  -0.76,-133.78)  382.65                80
 01/23/2023   22:41:50   (  -0.01,-137.10) (  -0.48,-139.07)  226.00                80
 01/24/2023   22:25:47   (  -0.01,-137.07) (   0.57,-134.55)  287.64                80
 01/26/2023   10:47:35   (   0.01,-137.03) (   0.62,-139.82)  316.94                80
 01/27/2023   10:26:11   (   0.01,-137.01) (  -0.37,-135.28)  196.46                80
 01/28/2023   22:48:07   (  -0.01,-136.96) (  -0.85,-140.57)  412.69                80