Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 14.  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)
 02/15/2023   10:45:46   (   0.02,-136.97) (   0.64,-139.82)  324.93                80
 02/16/2023   10:24:22   (   0.02,-136.96) (  -0.36,-135.29)  189.68                80
 02/17/2023   22:46:18   (  -0.02,-136.93) (  -0.85,-140.60)  417.75                80
 02/18/2023   22:27:34   (  -0.02,-136.92) (   0.16,-136.07)   96.62                80
 02/21/2023   10:30:38   (   0.02,-136.88) (  -0.02,-136.82)    7.76                80
 02/23/2023   22:36:28   (  -0.02,-136.83) (  -0.21,-137.59)   86.43                80
 02/24/2023   22:15:04   (  -0.02,-136.81) (   0.82,-133.06)  427.64                80
 02/26/2023   10:39:31   (   0.02,-136.78) (   0.38,-138.33)  176.75                80
 02/27/2023   10:18:07   (   0.02,-136.76) (  -0.65,-133.80)  336.87                80