Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2023   21:57:29   (  -0.02,-127.10) (  -0.22,-128.03)  106.44                80
 01/21/2023   21:41:20   (  -0.02,-125.94) (   0.53,-123.44)  284.75                80
 01/24/2023   09:41:34   (   0.02,-123.01) (   0.25,-124.04)  117.06                80
 01/25/2023   09:25:26   (   0.02,-121.86) (  -0.51,-119.45)  274.16                80
 01/27/2023   21:25:48   (  -0.02,-118.96) (  -0.25,-120.09)  128.90                80
 01/28/2023   21:09:40   (  -0.02,-117.80) (   0.52,-115.50)  262.34                80
 01/31/2023   09:09:53   (   0.02,-114.87) (   0.30,-116.09)  139.64                80
 02/01/2023   08:53:44   (   0.02,-113.71) (  -0.47,-111.50)  251.26                80