Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 1 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2023   10:06:44   (   0.01,-128.06) (   0.49,-130.33)  258.76                80
 01/13/2023   09:50:40   (   0.01,-128.08) (  -0.48,-125.79)  259.86                80
 01/14/2023   22:12:38   (  -0.00,-128.05) (  -0.67,-131.10)  348.23                80
 01/15/2023   21:51:14   (  -0.01,-128.06) (   0.31,-126.57)  169.81                80
 01/17/2023   10:13:03   (   0.01,-128.14) (   0.85,-131.84)  422.12                80
 01/18/2023   09:57:00   (   0.01,-128.15) (  -0.19,-127.32)   95.57                80
 01/20/2023   21:57:33   (  -0.01,-128.11) (  -0.02,-128.08)    3.74                80
 01/23/2023   10:00:38   (   0.00,-128.18) (   0.12,-128.83)   73.64                80
 01/24/2023   09:44:34   (  -0.00,-128.19) (  -0.86,-124.29)  443.42                80