From f2ff17e180493a035563b4e66dfbf165decfa437 Mon Sep 17 00:00:00 2001
From: BM Cho <bm1016bm@gmail.com>
Date: Thu, 30 Jul 2026 17:59:45 +0800
Subject: [PATCH] Update US equity market hours through 2028

---
 Data/market-hours/market-hours-database.json  | 13 +++++++-
 .../Securities/MarketHoursDatabaseTests.cs    | 30 +++++++++++++++++++
 2 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/Data/market-hours/market-hours-database.json b/Data/market-hours/market-hours-database.json
index d3d86c696998..2a10e4ffcb45 100644
--- a/Data/market-hours/market-hours-database.json
+++ b/Data/market-hours/market-hours-database.json
@@ -151,6 +151,7 @@
         "1/20/2025",
         "1/19/2026",
         "1/18/2027",
+        "1/17/2028",
         "2/16/1998",
         "2/15/1999",
         "2/21/2000",
@@ -181,6 +182,7 @@
         "2/17/2025",
         "2/16/2026",
         "2/15/2027",
+        "2/21/2028",
         "4/10/1998",
         "4/2/1999",
         "4/21/2000",
@@ -211,6 +213,7 @@
         "4/18/2025",
         "4/3/2026",
         "3/26/2027",
+        "4/14/2028",
         "5/25/1998",
         "5/31/1999",
         "5/29/2000",
@@ -241,6 +244,7 @@
         "5/26/2025",
         "5/25/2026",
         "5/31/2027",
+        "5/29/2028",
         "6/11/2004",
         "6/20/2022",
         "6/19/2023",
@@ -248,6 +252,7 @@
         "6/19/2025",
         "6/19/2026",
         "6/18/2027",
+        "6/19/2028",
         "7/3/1998",
         "7/5/1999",
         "7/4/2000",
@@ -278,6 +283,7 @@
         "7/4/2025",
         "7/3/2026",
         "7/5/2027",
+        "7/4/2028",
         "9/7/1998",
         "9/6/1999",
         "9/4/2000",
@@ -308,6 +314,7 @@
         "9/1/2025",
         "9/7/2026",
         "9/6/2027",
+        "9/4/2028",
         "9/11/2001",
         "9/12/2001",
         "9/13/2001",
@@ -344,6 +351,7 @@
         "11/27/2025",
         "11/26/2026",
         "11/25/2027",
+        "11/23/2028",
         "12/05/2018",
         "12/25/1998",
         "12/24/1999",
@@ -374,7 +382,8 @@
         "12/25/2024",
         "12/25/2025",
         "12/25/2026",
-        "12/24/2027"
+        "12/24/2027",
+        "12/25/2028"
       ],
       "earlyCloses": {
         "7/3/2000": "13:00:00",
@@ -393,6 +402,7 @@
         "7/3/2023": "13:00:00",
         "7/3/2024": "13:00:00",
         "7/3/2025": "13:00:00",
+        "7/3/2028": "13:00:00",
         "11/26/1999": "13:00:00",
         "11/24/2000": "13:00:00",
         "11/23/2001": "13:00:00",
@@ -422,6 +432,7 @@
         "11/28/2025": "13:00:00",
         "11/27/2026": "13:00:00",
         "11/26/2027": "13:00:00",
+        "11/24/2028": "13:00:00",
         "12/24/2001": "13:00:00",
         "12/24/2002": "13:00:00",
         "12/24/2003": "13:00:00",
diff --git a/Tests/Common/Securities/MarketHoursDatabaseTests.cs b/Tests/Common/Securities/MarketHoursDatabaseTests.cs
index 3d38072068b7..74e94c204688 100644
--- a/Tests/Common/Securities/MarketHoursDatabaseTests.cs
+++ b/Tests/Common/Securities/MarketHoursDatabaseTests.cs
@@ -128,6 +128,36 @@ public void CorrectlyReadsUsEquityEarlyCloses()
             Assert.AreEqual(earlyCloseTime, equityHours.EarlyCloses[date]);
         }
 
+        [Test]
+        public void CorrectlyReadsUsEquity2028SpecialHours()
+        {
+            var exchangeHours = MarketHoursDatabase.FromDataFolder()
+                .GetExchangeHours(Market.USA, null, SecurityType.Equity);
+
+            var holidays = new[]
+            {
+                new DateTime(2028, 1, 17),
+                new DateTime(2028, 2, 21),
+                new DateTime(2028, 4, 14),
+                new DateTime(2028, 5, 29),
+                new DateTime(2028, 6, 19),
+                new DateTime(2028, 7, 4),
+                new DateTime(2028, 9, 4),
+                new DateTime(2028, 11, 23),
+                new DateTime(2028, 12, 25)
+            };
+
+            foreach (var holiday in holidays)
+            {
+                Assert.IsTrue(exchangeHours.Holidays.Contains(holiday));
+            }
+            Assert.IsFalse(exchangeHours.Holidays.Contains(new DateTime(2028, 1, 1)));
+
+            var earlyCloseTime = new TimeSpan(13, 0, 0);
+            Assert.AreEqual(earlyCloseTime, exchangeHours.EarlyCloses[new DateTime(2028, 7, 3)]);
+            Assert.AreEqual(earlyCloseTime, exchangeHours.EarlyCloses[new DateTime(2028, 11, 24)]);
+        }
+
         [TestCase("AUP", Market.COMEX, true)]
         [TestCase("AA6", Market.NYMEX, true)]
         [TestCase("6A", Market.CME, false)]