Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 9 26.  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)
 09/27/2023   10:44:12   (  -0.01,-137.00) (   0.59,-139.79)  316.86                80
 09/28/2023   10:22:47   (  -0.00,-137.00) (  -0.38,-135.25)  199.74                80
 09/29/2023   22:44:43   (   0.00,-137.00) (  -0.80,-140.55)  405.47                80
 09/30/2023   22:28:39   (   0.00,-136.99) (   0.24,-136.03)  110.95                80
 10/02/2023   10:50:25   (  -0.00,-137.00) (   0.98,-141.28)  489.20                80
 10/03/2023   10:31:41   (   0.00,-136.99) (  -0.06,-136.76)   26.84                80
 10/05/2023   22:32:10   (  -0.02,-136.96) (  -0.17,-137.52)   63.95                80
 10/06/2023   22:16:06   (  -0.02,-136.95) (   0.88,-132.99)  451.59                80
 10/08/2023   10:35:12   (   0.01,-136.94) (   0.33,-138.25)  150.01                80
 10/09/2023   10:19:08   (   0.00,-136.93) (  -0.73,-133.73)  365.13                80