Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/05/2021   22:47:24   (  -0.03,-137.22) (  -0.84,-140.71)  398.86                80
 10/06/2021   22:31:19   (  -0.03,-137.21) (   0.17,-136.18)  117.55                80
 10/08/2021   10:50:28   (   0.03,-137.21) (   1.00,-141.45)  483.53                80
 10/09/2021   10:34:23   (   0.04,-137.20) (  -0.01,-136.91)   32.26                80
 10/11/2021   22:34:56   (  -0.03,-137.17) (  -0.12,-137.69)   58.89                80
 10/12/2021   22:18:51   (  -0.03,-137.16) (   0.89,-133.16)  456.11                80
 10/14/2021   10:38:00   (   0.02,-137.14) (   0.28,-138.43)  146.92                80
 10/15/2021   10:21:55   (   0.02,-137.12) (  -0.73,-133.90)  367.88                80
 10/16/2021   22:41:12   (  -0.01,-137.10) (  -0.46,-139.20)  239.20                80
 10/17/2021   22:25:07   (  -0.01,-137.08) (   0.55,-134.67)  275.63                80