Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 1.  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)
 02/01/2023   22:46:26   (   0.00,-137.00) (  -0.81,-140.59)  409.94                80
 02/02/2023   22:30:20   (   0.01,-136.99) (   0.21,-136.06)  106.19                80
 02/04/2023   10:52:07   (  -0.01,-136.99) (   0.97,-141.33)  494.58                80
 02/05/2023   10:30:41   (  -0.01,-136.99) (  -0.05,-136.80)   21.34                80
 02/07/2023   22:33:51   (   0.02,-136.96) (  -0.10,-137.57)   68.98                80
 02/08/2023   22:17:45   (   0.02,-136.96) (   0.87,-133.03)  446.78                80
 02/10/2023   10:36:51   (  -0.02,-136.95) (   0.31,-138.30)  154.79                80
 02/11/2023   10:20:45   (  -0.02,-136.93) (  -0.71,-133.77)  360.54                80
 02/12/2023   22:40:01   (   0.02,-136.91) (  -0.44,-139.08)  246.86                80
 02/13/2023   22:23:54   (   0.02,-136.89) (   0.53,-134.53)  267.84                80