Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 1 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2023   21:44:55   (  -0.01,-127.96) (   0.63,-125.05)  331.53                80
 01/12/2023   10:06:44   (   0.01,-128.06) (   0.53,-130.32)  258.82                80
 01/13/2023   09:50:40   (   0.01,-128.08) (  -0.50,-125.80)  259.74                80
 01/14/2023   22:12:38   (  -0.00,-128.04) (  -0.71,-131.10)  348.53                80
 01/15/2023   21:51:14   (  -0.01,-128.06) (   0.33,-126.57)  169.46                80
 01/17/2023   10:13:04   (   0.01,-128.14) (   0.83,-131.85)  422.34                80
 01/18/2023   09:56:59   (   0.01,-128.15) (  -0.15,-127.31)   95.35                80
 01/20/2023   21:57:33   (  -0.01,-128.11) (  -0.01,-128.08)    2.78                80
 01/23/2023   10:00:38   (   0.00,-128.18) (   0.17,-128.82)   74.11                80