From bc609d3b27aa86db8357871241f3cebcae4c2030 Mon Sep 17 00:00:00 2001
From: g1mn <16727837+g1mn@users.noreply.github.com>
Date: Sun, 26 Jul 2026 12:18:02 +0000
Subject: [PATCH] fix(US): Mardi Gras is a Louisiana state holiday, not New
 Orleans only

US.yaml carried Mardi Gras (easter -47) under LA.regions.NO, so US-LA missed it
entirely. Louisiana state employees do not work Mardi Gras Day (R.S. 1:55
B(1)(a)), and it is a legal holiday in the 29 parishes listed in R.S. 1:55 A(3)
once the parish declares it by ordinance, plus in all municipalities - state
level is the closest fit for this library's granularity.

The NO region keeps its name so getRegions('US', 'LA') still returns it and
US-LA-NO queries keep resolving; Mardi Gras now reaches them by inheritance.
Lundi Gras is left out: the issue guessed at it, but R.S. 1:55 does not mention
the Monday before.

Fixtures regenerated with `mocha test/all.mocha.js --writetests --countries US`.

Closes #638
---
 data/countries/US.yaml        | 13 ++++++++-----
 test/fixtures/US-LA-2015.json |  9 +++++++++
 test/fixtures/US-LA-2016.json |  9 +++++++++
 test/fixtures/US-LA-2017.json |  9 +++++++++
 test/fixtures/US-LA-2018.json |  9 +++++++++
 test/fixtures/US-LA-2019.json |  9 +++++++++
 test/fixtures/US-LA-2020.json |  9 +++++++++
 test/fixtures/US-LA-2021.json |  9 +++++++++
 test/fixtures/US-LA-2022.json |  9 +++++++++
 test/fixtures/US-LA-2023.json |  9 +++++++++
 test/fixtures/US-LA-2024.json |  9 +++++++++
 test/fixtures/US-LA-2025.json |  9 +++++++++
 test/fixtures/US-LA-2026.json |  9 +++++++++
 test/fixtures/US-LA-2027.json |  9 +++++++++
 test/fixtures/US-LA-2028.json |  9 +++++++++
 test/fixtures/US-LA-2029.json |  9 +++++++++
 16 files changed, 143 insertions(+), 5 deletions(-)

diff --git a/data/countries/US.yaml b/data/countries/US.yaml
index d2c1b42e3..4963cbbbf 100644
--- a/data/countries/US.yaml
+++ b/data/countries/US.yaml
@@ -496,6 +496,14 @@ holidays:
         zones:
           - America/Chicago
         days:
+          # Mardi Gras is state-wide, not just New Orleans: state employees do not
+          # work it (R.S. 1:55 B(1)(a)) and it is a legal holiday in the parishes
+          # listed in R.S. 1:55 A(3) once declared by ordinance, plus in all
+          # municipalities. https://legis.la.gov/Legis/Law.aspx?d=74097
+          easter -47:
+            _name: easter -47
+            name:
+              en: Mardi Gras
           easter -2:
             _name: easter -2
           tuesday after 1st monday in November in even years:
@@ -504,11 +512,6 @@ holidays:
         regions:
           NO:
             name: New Orleans
-            days:
-              easter -47:
-                _name: easter -47
-                name:
-                  en: Mardi Gras
       ME:
         name: Maine
         zones:
diff --git a/test/fixtures/US-LA-2015.json b/test/fixtures/US-LA-2015.json
index 0810c23c1..c91b8182d 100644
--- a/test/fixtures/US-LA-2015.json
+++ b/test/fixtures/US-LA-2015.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2015-02-17 00:00:00",
+    "start": "2015-02-17T06:00:00.000Z",
+    "end": "2015-02-18T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2015-03-17 00:00:00",
     "start": "2015-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2016.json b/test/fixtures/US-LA-2016.json
index 23743efbf..8337ef44d 100644
--- a/test/fixtures/US-LA-2016.json
+++ b/test/fixtures/US-LA-2016.json
@@ -17,6 +17,15 @@
     "rule": "3rd monday in January",
     "_weekday": "Mon"
   },
+  {
+    "date": "2016-02-09 00:00:00",
+    "start": "2016-02-09T06:00:00.000Z",
+    "end": "2016-02-10T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2016-02-14 00:00:00",
     "start": "2016-02-14T06:00:00.000Z",
diff --git a/test/fixtures/US-LA-2017.json b/test/fixtures/US-LA-2017.json
index a05160759..373b1960c 100644
--- a/test/fixtures/US-LA-2017.json
+++ b/test/fixtures/US-LA-2017.json
@@ -45,6 +45,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2017-02-28 00:00:00",
+    "start": "2017-02-28T06:00:00.000Z",
+    "end": "2017-03-01T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2017-03-17 00:00:00",
     "start": "2017-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2018.json b/test/fixtures/US-LA-2018.json
index d67f3abb7..416fdad65 100644
--- a/test/fixtures/US-LA-2018.json
+++ b/test/fixtures/US-LA-2018.json
@@ -17,6 +17,15 @@
     "rule": "3rd monday in January",
     "_weekday": "Mon"
   },
+  {
+    "date": "2018-02-13 00:00:00",
+    "start": "2018-02-13T06:00:00.000Z",
+    "end": "2018-02-14T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2018-02-14 00:00:00",
     "start": "2018-02-14T06:00:00.000Z",
diff --git a/test/fixtures/US-LA-2019.json b/test/fixtures/US-LA-2019.json
index 8a2be63aa..adb19b92a 100644
--- a/test/fixtures/US-LA-2019.json
+++ b/test/fixtures/US-LA-2019.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2019-03-05 00:00:00",
+    "start": "2019-03-05T06:00:00.000Z",
+    "end": "2019-03-06T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2019-03-17 00:00:00",
     "start": "2019-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2020.json b/test/fixtures/US-LA-2020.json
index 82299ee10..ad8eb3e91 100644
--- a/test/fixtures/US-LA-2020.json
+++ b/test/fixtures/US-LA-2020.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2020-02-25 00:00:00",
+    "start": "2020-02-25T06:00:00.000Z",
+    "end": "2020-02-26T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2020-03-17 00:00:00",
     "start": "2020-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2021.json b/test/fixtures/US-LA-2021.json
index 337481a26..cbd7cf5c4 100644
--- a/test/fixtures/US-LA-2021.json
+++ b/test/fixtures/US-LA-2021.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2021-02-16 00:00:00",
+    "start": "2021-02-16T06:00:00.000Z",
+    "end": "2021-02-17T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2021-03-17 00:00:00",
     "start": "2021-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2022.json b/test/fixtures/US-LA-2022.json
index 9cb3b3d1c..57f603de2 100644
--- a/test/fixtures/US-LA-2022.json
+++ b/test/fixtures/US-LA-2022.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2022-03-01 00:00:00",
+    "start": "2022-03-01T06:00:00.000Z",
+    "end": "2022-03-02T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2022-03-17 00:00:00",
     "start": "2022-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2023.json b/test/fixtures/US-LA-2023.json
index 56cc15916..7272cf463 100644
--- a/test/fixtures/US-LA-2023.json
+++ b/test/fixtures/US-LA-2023.json
@@ -45,6 +45,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2023-02-21 00:00:00",
+    "start": "2023-02-21T06:00:00.000Z",
+    "end": "2023-02-22T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2023-03-17 00:00:00",
     "start": "2023-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2024.json b/test/fixtures/US-LA-2024.json
index a4c955090..b78250dd3 100644
--- a/test/fixtures/US-LA-2024.json
+++ b/test/fixtures/US-LA-2024.json
@@ -17,6 +17,15 @@
     "rule": "3rd monday in January",
     "_weekday": "Mon"
   },
+  {
+    "date": "2024-02-13 00:00:00",
+    "start": "2024-02-13T06:00:00.000Z",
+    "end": "2024-02-14T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2024-02-14 00:00:00",
     "start": "2024-02-14T06:00:00.000Z",
diff --git a/test/fixtures/US-LA-2025.json b/test/fixtures/US-LA-2025.json
index 9d61fbb1d..49ae66579 100644
--- a/test/fixtures/US-LA-2025.json
+++ b/test/fixtures/US-LA-2025.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2025-03-04 00:00:00",
+    "start": "2025-03-04T06:00:00.000Z",
+    "end": "2025-03-05T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2025-03-17 00:00:00",
     "start": "2025-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2026.json b/test/fixtures/US-LA-2026.json
index d4d981be6..5d0cb7da3 100644
--- a/test/fixtures/US-LA-2026.json
+++ b/test/fixtures/US-LA-2026.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2026-02-17 00:00:00",
+    "start": "2026-02-17T06:00:00.000Z",
+    "end": "2026-02-18T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2026-03-17 00:00:00",
     "start": "2026-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2027.json b/test/fixtures/US-LA-2027.json
index 981507d08..9d6e8febd 100644
--- a/test/fixtures/US-LA-2027.json
+++ b/test/fixtures/US-LA-2027.json
@@ -17,6 +17,15 @@
     "rule": "3rd monday in January",
     "_weekday": "Mon"
   },
+  {
+    "date": "2027-02-09 00:00:00",
+    "start": "2027-02-09T06:00:00.000Z",
+    "end": "2027-02-10T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2027-02-14 00:00:00",
     "start": "2027-02-14T06:00:00.000Z",
diff --git a/test/fixtures/US-LA-2028.json b/test/fixtures/US-LA-2028.json
index 3eb714b56..3f62a2b41 100644
--- a/test/fixtures/US-LA-2028.json
+++ b/test/fixtures/US-LA-2028.json
@@ -35,6 +35,15 @@
     "rule": "3rd monday in February",
     "_weekday": "Mon"
   },
+  {
+    "date": "2028-02-29 00:00:00",
+    "start": "2028-02-29T06:00:00.000Z",
+    "end": "2028-03-01T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2028-03-17 00:00:00",
     "start": "2028-03-17T05:00:00.000Z",
diff --git a/test/fixtures/US-LA-2029.json b/test/fixtures/US-LA-2029.json
index baeca63d3..f94c2259c 100644
--- a/test/fixtures/US-LA-2029.json
+++ b/test/fixtures/US-LA-2029.json
@@ -17,6 +17,15 @@
     "rule": "3rd monday in January",
     "_weekday": "Mon"
   },
+  {
+    "date": "2029-02-13 00:00:00",
+    "start": "2029-02-13T06:00:00.000Z",
+    "end": "2029-02-14T06:00:00.000Z",
+    "name": "Mardi Gras",
+    "type": "public",
+    "rule": "easter -47",
+    "_weekday": "Tue"
+  },
   {
     "date": "2029-02-14 00:00:00",
     "start": "2029-02-14T06:00:00.000Z",