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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/17/2021   10:25:08   (   0.04,-137.20) (  -0.35,-135.40)  205.00                80
 08/18/2021   22:47:05   (  -0.04,-137.18) (  -0.84,-140.70)  401.61                80
 08/19/2021   22:31:02   (  -0.04,-137.17) (   0.21,-136.18)  113.78                80
 08/21/2021   10:50:10   (   0.03,-137.17) (   0.97,-141.45)  487.71                80
 08/22/2021   10:31:26   (   0.02,-137.16) (  -0.02,-136.91)   27.48                80
 08/24/2021   22:34:39   (  -0.02,-137.13) (  -0.12,-137.70)   64.43                80
 08/25/2021   22:18:35   (  -0.02,-137.12) (   0.87,-133.16)  450.86                80
 08/27/2021   10:37:43   (   0.02,-137.11) (   0.31,-138.43)  150.93                80
 08/28/2021   10:21:39   (   0.02,-137.10) (  -0.68,-133.90)  363.86                80
 08/29/2021   22:40:56   (  -0.01,-137.06) (  -0.51,-139.20)  244.46                80
 08/30/2021   22:24:53   (  -0.01,-137.05) (   0.55,-134.68)  269.80                80