Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/31/2021   22:18:52   (   0.02,-137.23) (   0.90,-133.14)  465.09                80
 01/02/2022   10:37:59   (  -0.01,-137.24) (   0.23,-138.41)  133.49                80
 01/03/2022   10:21:52   (  -0.01,-137.24) (  -0.75,-133.87)  384.05                80
 01/04/2022   22:41:06   (   0.01,-137.25) (  -0.44,-139.17)  219.36                80
 01/05/2022   22:25:01   (   0.01,-137.25) (   0.60,-134.64)  297.94                80
 01/07/2022   10:44:06   (  -0.02,-137.26) (   0.59,-139.90)  301.30                80
 01/08/2022   10:28:01   (  -0.02,-137.26) (  -0.46,-135.37)  215.94                80
 01/09/2022   22:47:15   (   0.02,-137.26) (  -0.73,-140.66)  387.73                80
 01/10/2022   22:31:09   (   0.01,-137.26) (   0.26,-136.12)  129.40                80
 01/12/2022   10:50:14   (  -0.00,-137.26) (   0.93,-141.38)  470.19                80
 01/13/2022   10:34:07   (   0.01,-137.26) (  -0.06,-136.84)   46.66                80