Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2022   10:46:11   (  -0.01,-137.34) (   0.52,-139.81)  281.01                80
 12/30/2022   10:24:47   (  -0.02,-137.34) (  -0.50,-135.28)  235.01                80
 12/31/2022   22:49:22   (   0.01,-137.33) (  -0.74,-140.58)  370.22                80
 01/01/2023   22:30:37   (  -0.02,-137.33) (   0.28,-136.05)  146.37                80
 01/03/2023   10:49:45   (   0.02,-137.32) (   0.92,-141.32)  455.60                80
 01/04/2023   10:31:00   (   0.02,-137.32) (  -0.11,-136.79)   59.72                80
 01/06/2023   22:34:11   (  -0.02,-137.29) (  -0.10,-137.57)   31.97                80
 01/07/2023   22:18:07   (  -0.01,-137.28) (   0.93,-133.04)  482.99                80
 01/09/2023   10:39:54   (   0.01,-137.26) (   0.26,-138.31)  120.14                80
 01/10/2023   10:18:29   (   0.01,-137.24) (  -0.77,-133.79)  394.40                80