Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2023   22:06:18   (  -0.01,-127.94) (  -0.38,-129.58)  187.18                80
 01/10/2023   21:44:55   (  -0.01,-127.96) (   0.65,-125.05)  331.38                80
 01/12/2023   10:06:44   (   0.01,-128.06) (   0.51,-130.33)  258.86                80
 01/13/2023   09:50:41   (   0.01,-128.08) (  -0.52,-125.80)  259.70                80
 01/14/2023   22:12:38   (  -0.00,-128.04) (  -0.69,-131.10)  348.73                80
 01/15/2023   21:51:15   (  -0.01,-128.06) (   0.35,-126.58)  169.26                80
 01/17/2023   10:13:04   (   0.01,-128.14) (   0.81,-131.85)  422.45                80
 01/18/2023   09:56:59   (   0.01,-128.15) (  -0.17,-127.31)   95.20                80
 01/20/2023   21:57:33   (  -0.01,-128.11) (   0.01,-128.09)    3.30                80