Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2021   22:23:49   (   0.01,-137.21) (   0.62,-134.54)  305.10                80
 01/04/2021   10:45:36   (  -0.02,-137.20) (   0.59,-139.80)  296.86                80
 01/05/2021   10:24:11   (  -0.02,-137.20) (  -0.43,-135.27)  218.60                80
 01/06/2021   22:46:09   (   0.02,-137.18) (  -0.73,-140.59)  387.76                80
 01/07/2021   22:30:04   (   0.02,-137.17) (   0.29,-136.06)  127.51                80
 01/09/2021   10:49:11   (  -0.00,-137.15) (   0.92,-141.32)  475.00                80
 01/10/2021   10:33:07   (   0.01,-137.13) (  -0.09,-136.79)   39.87                80
 01/12/2021   22:33:39   (  -0.01,-137.09) (  -0.09,-137.56)   54.06                80
 01/13/2021   22:17:33   (  -0.01,-137.07) (   0.87,-133.02)  460.14                80
 01/15/2021   10:39:22   (   0.01,-137.04) (   0.29,-138.30)  143.82                80