Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2021   10:45:34   (  -0.04,-137.20) (   0.55,-139.83)  299.94                80
 03/10/2021   10:24:10   (  -0.04,-137.19) (  -0.48,-135.30)  215.90                80
 03/11/2021   22:46:05   (   0.03,-137.19) (  -0.74,-140.59)  388.28                80
 03/12/2021   22:30:01   (   0.03,-137.18) (   0.30,-136.07)  127.53                80
 03/14/2021   10:51:48   (  -0.03,-137.16) (   0.89,-141.33)  475.10                80
 03/15/2021   10:30:22   (  -0.03,-137.15) (  -0.09,-136.79)   40.34                80
 03/17/2021   22:33:33   (   0.03,-137.13) (  -0.08,-137.56)   49.77                80
 03/18/2021   22:17:29   (   0.03,-137.11) (   0.96,-133.03)  465.20                80
 03/20/2021   10:39:16   (  -0.03,-137.08) (   0.23,-138.30)  138.86                80
 03/21/2021   10:17:51   (  -0.02,-137.06) (  -0.75,-133.76)  375.53                80