diff --git a/au.yaml b/au.yaml
index a5657fe..9d8f566 100644
--- a/au.yaml
+++ b/au.yaml
@@ -107,6 +107,14 @@ months:
     regions: [au_act, au_nsw, au_sa, au_tas, au_nt, au_vic]
     week: 2
     wday: 1
+    year_ranges:
+      until: 2022
+  - name: King's Birthday
+    regions: [au_act, au_nsw, au_sa, au_tas, au_nt, au_vic]
+    week: 2
+    wday: 1
+    year_ranges:
+      from: 2023
   - name: Queen's Birthday
     regions: [au_qld]
     function: qld_queens_birthday_june(year)
@@ -133,6 +141,14 @@ months:
     regions: [au_wa]
     week: -1
     wday: 1
+    year_ranges:
+      until: 2021
+  - name: King's Birthday
+    regions: [au_wa]
+    week: -1
+    wday: 1
+    year_ranges:
+      from: 2022
   - name: "Family & Community Day"
     regions: [au_act]
     week: -1
@@ -155,6 +171,14 @@ months:
     regions: [au_qld]
     function: qld_queens_bday_october(year)
     observed: to_monday_if_weekend(date)
+    year_ranges:
+      until: 2022
+  - name: King's Birthday
+    regions: [au_qld]
+    function: qld_kings_bday_october(year)
+    observed: to_monday_if_weekend(date)
+    year_ranges:
+      from: 2023
   - name: Royal Hobart Show
     regions: [au_tas_south]
     function: hobart_show_day(year)
@@ -221,6 +245,17 @@ methods:
       else
         nil
       end
+  qld_kings_bday_october:
+    # http://www.justice.qld.gov.au/fair-and-safe-work/industrial-relations/public-holidays/dates
+    # celebrated twice in 2012
+    # in october again from 2016
+    arguments: year
+    ruby: |
+      if year >= 2023
+        Holidays::Factory::DateCalculator.day_of_month_calculator.call(year, 10, 1, 1)
+      else
+        nil
+      end
   qld_queens_birthday_june:
     # http://www.justice.qld.gov.au/fair-and-safe-work/industrial-relations/public-holidays/dates
     # in june until 2015
@@ -347,15 +382,35 @@ tests:
     expect:
       name: 'Labour Day'
   - given:
-      date: ['2012-06-11', '2012-10-01', '2013-6-10', '2015-6-8', '2016-10-3']
+      date: ['2012-06-11', '2012-10-01', '2013-6-10', '2015-6-8', '2016-10-3', '2022-10-03']
       regions: ["au_qld"]
     expect:
       name: "Queen's Birthday"
   - given:
-      date: ['2014-09-29', '2015-09-28', '2016-09-26']
+      date: ['2023-10-2']
+      regions: ["au_qld"]
+    expect:
+      name: "King's Birthday"
+  - given:
+      date: ['2022-06-13']
+      regions: ["au_act", "au_nsw", "au_sa", "au_tas", "au_nt", "au_vic"]
+    expect:
+      name: "Queen's Birthday"
+  - given:
+      date: ['2023-06-12']
+      regions: ["au_act", "au_nsw", "au_sa", "au_tas", "au_nt", "au_vic"]
+    expect:
+      name: "King's Birthday"
+  - given:
+      date: ['2014-09-29', '2015-09-28', '2016-09-26', '2021-09-27']
       regions: ["au_wa"]
     expect:
       name: "Queen's Birthday"
+  - given:
+      date: ['2022-09-26', '2023-09-25']
+      regions: ["au_wa"]
+    expect:
+      name: "King's Birthday"
   - given:
       date: '2014-09-29'
       regions: ["au_act"]