Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 24.  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)
 12/25/2022   10:18:31   (  -0.01,-137.33) (  -0.83,-133.75)  408.54                80
 12/26/2022   22:40:28   (   0.01,-137.32) (  -0.36,-139.06)  197.38                80
 12/27/2022   22:24:23   (   0.00,-137.32) (   0.66,-134.53)  318.18                80
 12/29/2022   10:46:10   (  -0.00,-137.31) (   0.55,-139.80)  283.93                80
 12/30/2022   10:24:46   (  -0.00,-137.30) (  -0.47,-135.27)  231.45                80
 12/31/2022   22:46:42   (  -0.00,-137.29) (  -0.72,-140.58)  375.00                80
 01/01/2023   22:30:37   (  -0.00,-137.28) (   0.25,-136.04)  140.09                80
 01/03/2023   10:49:45   (   0.00,-137.26) (   0.90,-141.33)  463.03                80
 01/04/2023   10:33:40   (   0.00,-137.25) (  -0.07,-136.79)   51.68                80
 01/06/2023   22:34:12   (  -0.01,-137.20) (  -0.08,-137.57)   41.81                80