Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2023   22:12:46   (  -0.04,-128.25) (  -0.70,-131.09)  323.52                80
 01/31/2023   21:51:23   (  -0.04,-128.25) (   0.36,-126.56)  193.26                80
 02/02/2023   10:13:11   (   0.05,-128.29) (   0.81,-131.83)  402.76                80
 02/03/2023   09:57:07   (   0.05,-128.29) (  -0.19,-127.30)  114.02                80
 02/04/2023   22:19:03   (  -0.05,-128.26) (  -1.02,-132.59)  493.61                80
 02/05/2023   21:57:38   (  -0.05,-128.26) (  -0.01,-128.06)   22.66                80
 02/08/2023   10:00:42   (   0.06,-128.28) (   0.17,-128.79)   57.94                80
 02/09/2023   09:44:38   (   0.05,-128.28) (  -0.84,-124.26)  458.42                80
 02/10/2023   22:06:34   (  -0.06,-128.24) (  -0.36,-129.55)  149.61                80
 02/11/2023   21:45:10   (  -0.06,-128.24) (   0.66,-125.02)  366.14                80