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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2023   21:51:14   (  -0.01,-128.07) (   0.33,-126.57)  171.26                80
 01/17/2023   10:13:04   (   0.01,-128.15) (   0.82,-131.85)  421.05                80
 01/18/2023   09:56:59   (   0.01,-128.16) (  -0.16,-127.31)   96.88                80
 01/20/2023   21:57:33   (  -0.01,-128.13) (   0.02,-128.09)    6.15                80
 01/23/2023   10:00:38   (   0.00,-128.20) (   0.13,-128.83)   71.05                80
 01/24/2023   09:44:33   (   0.00,-128.21) (  -0.86,-124.29)  446.22                80
 01/25/2023   22:06:31   (   0.00,-128.17) (  -0.32,-129.59)  162.03                80
 01/26/2023   21:45:06   (   0.00,-128.18) (   0.68,-125.06)  355.00                80
 01/28/2023   10:06:55   (  -0.00,-128.23) (   0.45,-130.34)  239.45                80