Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/24/2023   22:33:02   (  -0.02,-136.97) (  -0.18,-137.72)   85.14                80
 12/25/2023   22:16:57   (  -0.02,-136.96) (   0.85,-133.19)  430.27                80
 12/27/2023   10:38:44   (   0.02,-136.95) (   0.35,-138.45)  171.18                80
 12/28/2023   10:17:20   (   0.02,-136.93) (  -0.68,-133.92)  343.83                80
 12/29/2023   22:41:55   (  -0.01,-136.90) (  -0.54,-139.21)  263.77                80
 12/30/2023   22:20:31   (  -0.00,-136.89) (   0.49,-134.69)  251.06                80
 01/01/2024   10:44:58   (  -0.00,-136.88) (   0.70,-139.95)  350.84                80
 01/02/2024   10:23:34   (  -0.01,-136.86) (  -0.34,-135.42)  163.84                80
 01/03/2024   22:48:09   (   0.01,-136.82) (  -0.87,-140.72)  444.15                80
 01/04/2024   22:26:44   (   0.01,-136.80) (   0.18,-136.19)   70.40                80