Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/08/2021   10:50:27   (   0.04,-137.21) (   1.01,-141.44)  482.72                80
 10/09/2021   10:34:23   (   0.04,-137.21) (  -0.00,-136.91)   33.34                80
 10/11/2021   22:34:56   (  -0.03,-137.18) (  -0.13,-137.69)   57.48                80
 10/12/2021   22:18:51   (  -0.03,-137.17) (   0.88,-133.16)  457.71                80
 10/14/2021   10:38:00   (   0.02,-137.15) (   0.28,-138.43)  144.81                80
 10/15/2021   10:21:55   (   0.02,-137.14) (  -0.73,-133.90)  370.20                80
 10/16/2021   22:41:11   (  -0.02,-137.12) (  -0.46,-139.20)  236.71                80
 10/17/2021   22:25:07   (  -0.02,-137.10) (   0.55,-134.67)  278.35                80
 10/19/2021   10:44:14   (   0.01,-137.08) (   0.67,-139.92)  324.25                80
 10/20/2021   10:28:10   (   0.02,-137.07) (  -0.34,-135.39)  190.57                80