diff --git a/experiments/ClimaEarth/run_amip.jl b/experiments/ClimaEarth/run_amip.jl
index bb22b7c60..44df09176 100644
--- a/experiments/ClimaEarth/run_amip.jl
+++ b/experiments/ClimaEarth/run_amip.jl
@@ -453,7 +453,7 @@ Utilities.show_memory_usage(comms_ctx)
 model_sims = (atmos_sim = atmos_sim, ice_sim = ice_sim, land_sim = land_sim, ocean_sim = ocean_sim);
 
 ## dates
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 #=
 ### Online Diagnostics
diff --git a/experiments/ClimaEarth/run_cloudless_aquaplanet.jl b/experiments/ClimaEarth/run_cloudless_aquaplanet.jl
index dfa3a3b73..87c4d1165 100644
--- a/experiments/ClimaEarth/run_cloudless_aquaplanet.jl
+++ b/experiments/ClimaEarth/run_cloudless_aquaplanet.jl
@@ -211,7 +211,7 @@ model_sims = (atmos_sim = atmos_sim, ocean_sim = ocean_sim);
 
 ## dates
 date0 = date = Dates.DateTime(start_date, Dates.dateformat"yyyymmdd")
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 #=
 ## Initialize Callbacks
diff --git a/experiments/ClimaEarth/run_cloudy_aquaplanet.jl b/experiments/ClimaEarth/run_cloudy_aquaplanet.jl
index da0990863..dede5363c 100644
--- a/experiments/ClimaEarth/run_cloudy_aquaplanet.jl
+++ b/experiments/ClimaEarth/run_cloudy_aquaplanet.jl
@@ -232,7 +232,7 @@ model_sims = (atmos_sim = atmos_sim, ocean_sim = ocean_sim);
 
 ## dates
 date0 = date = Dates.DateTime(start_date, Dates.dateformat"yyyymmdd")
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 #=
 ## Initialize Callbacks
diff --git a/experiments/ClimaEarth/run_cloudy_slabplanet.jl b/experiments/ClimaEarth/run_cloudy_slabplanet.jl
index fa51552ad..7b909b6ae 100644
--- a/experiments/ClimaEarth/run_cloudy_slabplanet.jl
+++ b/experiments/ClimaEarth/run_cloudy_slabplanet.jl
@@ -175,7 +175,7 @@ land_mask_data = artifact_data(mask_dataset_path(), "seamask")
 
 ## dates
 date0 = date = Dates.DateTime(start_date, Dates.dateformat"yyyymmdd")
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 
 #=
diff --git a/experiments/ClimaEarth/run_dry_held_suarez.jl b/experiments/ClimaEarth/run_dry_held_suarez.jl
index 45ad75d2f..1477bc27d 100644
--- a/experiments/ClimaEarth/run_dry_held_suarez.jl
+++ b/experiments/ClimaEarth/run_dry_held_suarez.jl
@@ -174,7 +174,7 @@ model_sims = (atmos_sim = atmos_sim,);
 
 ## dates
 date0 = date = Dates.DateTime(start_date, Dates.dateformat"yyyymmdd")
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 #=
 ## Initialize Callbacks
diff --git a/experiments/ClimaEarth/run_moist_held_suarez.jl b/experiments/ClimaEarth/run_moist_held_suarez.jl
index b1e29d239..e2f1bdf8c 100644
--- a/experiments/ClimaEarth/run_moist_held_suarez.jl
+++ b/experiments/ClimaEarth/run_moist_held_suarez.jl
@@ -218,7 +218,7 @@ model_sims = (atmos_sim = atmos_sim, ocean_sim = ocean_sim);
 
 ## dates
 date0 = date = Dates.DateTime(start_date, Dates.dateformat"yyyymmdd")
-dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)], new_month = [false])
+dates = (; date = [date], date0 = [date0], first_day_of_month = [Dates.firstdayofmonth(date0)])
 
 #=
 ## Initialize Callbacks