Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2022   22:09:21   (  -0.01,-127.48) (  -0.79,-131.01)  402.85                80
 12/14/2022   21:53:17   (  -0.02,-127.44) (   0.21,-126.48)  108.94                80
 12/16/2022   10:12:26   (   0.00,-127.44) (   0.99,-131.75)  492.33                80
 12/17/2022   09:56:23   (   0.01,-127.39) (  -0.01,-127.22)   19.33                80
 12/19/2022   21:56:58   (  -0.00,-127.22) (  -0.18,-128.00)   89.36                80
 12/20/2022   21:40:54   (  -0.01,-127.17) (   0.82,-123.47)  421.61                80
 12/22/2022   10:00:04   (   0.00,-127.15) (   0.38,-128.74)  181.08                80
 12/23/2022   09:44:00   (   0.01,-127.10) (  -0.63,-124.21)  329.22                80
 12/24/2022   22:03:18   (  -0.00,-126.95) (  -0.56,-129.52)  292.41                80
 12/25/2022   21:47:14   (  -0.01,-126.89) (   0.40,-124.97)  217.66                80