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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/18/2023   22:35:34   (  -0.00,-137.22) (  -0.08,-137.58)   40.62                80
 01/19/2023   22:19:29   (  -0.01,-137.20) (   0.91,-133.04)  473.43                80
 01/21/2023   10:41:17   (   0.01,-137.16) (   0.29,-138.31)  130.91                80
 01/22/2023   10:19:54   (   0.01,-137.14) (  -0.76,-133.78)  382.76                80
 01/23/2023   22:41:50   (  -0.01,-137.10) (  -0.48,-139.08)  225.86                80
 01/24/2023   22:25:47   (  -0.01,-137.07) (   0.58,-134.55)  287.80                80
 01/26/2023   10:47:35   (   0.01,-137.03) (   0.61,-139.82)  316.75                80
 01/27/2023   10:26:11   (   0.01,-137.01) (  -0.39,-135.28)  196.68                80
 01/28/2023   22:48:07   (  -0.01,-136.96) (  -0.83,-140.58)  412.43                80
 01/29/2023   22:32:03   (  -0.01,-136.93) (   0.17,-136.04)  100.75                80