diff --git a/test/experiment_tests/leaderboard.jl b/test/experiment_tests/leaderboard.jl
index 4899013a72..421d9bdc3b 100644
--- a/test/experiment_tests/leaderboard.jl
+++ b/test/experiment_tests/leaderboard.jl
@@ -37,7 +37,7 @@ include(joinpath(pkgdir(ClimaCoupler), "artifacts", "artifact_funcs.jl"))
         Dates.DateTime(1981, 7, 6),
         Dates.DateTime(1993, 11, 19),
         Dates.DateTime(2040, 4, 1),
-        Dates.DateTime(2000, 8, 30),
+        Dates.DateTime(2000, 8, 18),
     ]
 
     expected_dates = (