Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 12.  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)
 10/13/2023   10:44:04   (  -0.00,-137.01) (   0.59,-139.76)  313.69                80
 10/14/2023   10:22:39   (  -0.00,-137.00) (  -0.43,-135.23)  202.93                80
 10/15/2023   22:44:33   (   0.00,-137.00) (  -0.81,-140.52)  402.05                80
 10/16/2023   22:28:28   (  -0.00,-136.99) (   0.21,-135.98)  114.15                80
 10/18/2023   10:47:34   (   0.02,-136.98) (   0.95,-141.25)  486.73                80
 10/19/2023   10:28:48   (   0.02,-136.96) (  -0.01,-136.71)   28.87                80
 10/21/2023   22:34:36   (  -0.02,-136.92) (  -0.17,-137.47)   63.33                80
 10/22/2023   22:15:51   (  -0.01,-136.90) (   0.87,-132.94)  451.54                80
 10/24/2023   10:37:36   (   0.02,-136.87) (   0.34,-138.19)  151.02                80
 10/25/2023   10:16:11   (   0.02,-136.85) (  -0.71,-133.66)  363.81                80