Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/01/2021   10:24:59   (   0.04,-137.21) (  -0.38,-135.38)  208.28                80
 08/02/2021   22:46:56   (  -0.04,-137.21) (  -0.81,-140.69)  396.30                80
 08/03/2021   22:30:52   (  -0.03,-137.21) (   0.18,-136.15)  119.48                80
 08/05/2021   10:52:41   (   0.02,-137.20) (   0.96,-141.43)  482.71                80
 08/06/2021   10:31:17   (   0.02,-137.19) (  -0.03,-136.90)   32.52                80
 08/08/2021   22:34:30   (   0.01,-137.17) (  -0.12,-137.68)   59.27                80
 08/09/2021   22:18:27   (   0.01,-137.15) (   0.93,-133.16)  455.84                80
 08/11/2021   10:37:35   (  -0.01,-137.13) (   0.27,-138.43)  147.30                80
 08/12/2021   10:21:31   (  -0.00,-137.12) (  -0.72,-133.89)  367.41                80
 08/13/2021   22:40:48   (   0.00,-137.09) (  -0.46,-139.20)  239.83                80
 08/14/2021   22:24:44   (   0.00,-137.07) (   0.53,-134.66)  274.35                80