Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 9 27.  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   (  -0.02,-137.01) (   0.59,-139.79)  315.71                80
 09/28/2023   10:22:48   (  -0.02,-137.02) (  -0.44,-135.26)  201.24                80
 09/29/2023   22:44:43   (   0.02,-137.02) (  -0.80,-140.55)  403.14                80
 09/30/2023   22:28:39   (   0.02,-137.02) (   0.24,-136.03)  113.64                80
 10/02/2023   10:50:26   (  -0.02,-137.03) (   0.92,-141.30)  486.26                80
 10/03/2023   10:29:01   (  -0.02,-137.03) (  -0.07,-136.76)   29.98                80
 10/05/2023   22:32:11   (   0.03,-137.01) (  -0.10,-137.53)   59.99                80
 10/06/2023   22:16:07   (   0.03,-137.00) (   0.95,-133.01)  455.79                80
 10/08/2023   10:37:53   (  -0.04,-136.99) (   0.26,-138.27)  145.37                80
 10/09/2023   10:16:28   (  -0.04,-136.99) (  -0.74,-133.73)  370.22                80
 10/10/2023   22:38:24   (   0.04,-136.97) (  -0.40,-139.04)  236.28                80