Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2020   22:33:37   (   0.01,-137.22) (  -0.07,-137.55)   36.87                80
 12/28/2020   22:17:32   (   0.00,-137.22) (   0.94,-133.02)  479.41                80
 12/30/2020   10:36:41   (   0.00,-137.22) (   0.21,-138.29)  121.35                80
 12/31/2020   10:20:35   (   0.01,-137.22) (  -0.74,-133.75)  394.38                80
 01/01/2021   22:39:53   (  -0.01,-137.20) (  -0.42,-139.06)  212.36                80
 01/02/2021   22:23:48   (  -0.01,-137.19) (   0.59,-134.53)  302.93                80
 01/04/2021   10:42:55   (   0.01,-137.18) (   0.62,-139.80)  299.08                80
 01/05/2021   10:26:51   (   0.01,-137.17) (  -0.39,-135.27)  215.84                80
 01/06/2021   22:46:08   (  -0.00,-137.14) (  -0.76,-140.58)  392.02                80
 01/07/2021   22:30:04   (  -0.01,-137.12) (   0.26,-136.05)  122.63                80