Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 2.  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)
 02/02/2023   22:30:21   (   0.00,-136.99) (   0.23,-136.07)  106.13                80
 02/04/2023   10:52:07   (  -0.01,-136.99) (   0.95,-141.33)  494.84                80
 02/05/2023   10:33:22   (  -0.01,-136.98) (  -0.07,-136.80)   21.06                80
 02/07/2023   22:33:51   (   0.02,-136.96) (  -0.13,-137.57)   69.48                80
 02/08/2023   22:17:45   (   0.01,-136.95) (   0.89,-133.03)  446.17                80
 02/10/2023   10:36:51   (  -0.02,-136.94) (   0.29,-138.30)  155.53                80
 02/11/2023   10:20:46   (  -0.02,-136.92) (  -0.74,-133.77)  359.69                80
 02/12/2023   22:40:00   (   0.02,-136.90) (  -0.47,-139.07)  247.79                80
 02/13/2023   22:23:55   (   0.02,-136.88) (   0.55,-134.54)  266.82                80
 02/15/2023   10:43:01   (  -0.02,-136.85) (   0.62,-139.81)  336.79                80