Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 18.  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)
 03/19/2023   10:45:38   (  -0.00,-137.00) (   0.62,-139.87)  326.84                80
 03/20/2023   10:24:12   (  -0.00,-137.00) (  -0.39,-135.34)  189.49                80
 03/21/2023   22:46:07   (   0.00,-136.99) (  -0.83,-140.63)  415.35                80
 03/22/2023   22:30:01   (   0.00,-136.99) (   0.20,-136.10)  100.90                80
 03/25/2023   10:33:02   (  -0.00,-136.97) (  -0.05,-136.84)   15.77                80
 03/27/2023   22:33:31   (   0.01,-136.94) (  -0.12,-137.60)   74.96                80
 03/28/2023   22:17:25   (   0.01,-136.93) (   0.86,-133.06)  440.32                80
 03/30/2023   10:36:31   (  -0.02,-136.91) (   0.30,-138.33)  162.28                80
 03/31/2023   10:20:25   (  -0.02,-136.89) (  -0.74,-133.80)  352.71                80