Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 6 1.  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)
 06/02/2023   10:38:37   (  -0.01,-137.03) (   0.27,-138.30)  145.00                80
 06/03/2023   10:17:13   (  -0.02,-137.03) (  -0.75,-133.78)  371.07                80
 06/04/2023   22:39:09   (   0.02,-137.02) (  -0.45,-139.08)  235.39                80
 06/05/2023   22:23:05   (   0.03,-137.01) (   0.58,-134.55)  280.17                80
 06/07/2023   10:42:12   (  -0.03,-137.01) (   0.61,-139.82)  321.11                80
 06/08/2023   10:26:08   (  -0.03,-137.00) (  -0.41,-135.29)  194.16                80
 06/09/2023   22:45:24   (   0.03,-136.97) (  -0.78,-140.60)  413.29                80
 06/10/2023   22:29:19   (   0.03,-136.96) (   0.25,-136.07)  102.00                80
 06/12/2023   10:48:27   (  -0.04,-136.95) (   0.94,-141.34)  499.58                80
 06/13/2023   10:32:22   (  -0.04,-136.94) (  -0.10,-136.81)   15.72                80