From 063b37bb4d2ee27f8148007e570e56579c5977c3 Mon Sep 17 00:00:00 2001
From: "J. King" <jking@jkingweb.ca>
Date: Mon, 19 Jan 2026 07:20:53 -0500
Subject: [PATCH 1/4] VCP requires that dates be normalized with zones without
 colons

---
 tests/microformats-v2-unit/value/value-dt.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/microformats-v2-unit/value/value-dt.json b/tests/microformats-v2-unit/value/value-dt.json
index 12e393b..1625c09 100644
--- a/tests/microformats-v2-unit/value/value-dt.json
+++ b/tests/microformats-v2-unit/value/value-dt.json
@@ -72,10 +72,10 @@
                     "Valid NotADate Valid"
                 ],
                 "1-with-tz": [
-                    "2000-01-01 00:00:00+00:00"
+                    "2000-01-01 00:00:00+0000"
                 ],
                 "2-with-tz": [
-                    "2000-01-01 00:00:00+00:00"
+                    "2000-01-01 00:00:00+0000"
                 ],
                 "1-first-wins": [
                     "2000-01-01"

From f12671498861866ec9702bb14c83347830d56ab0 Mon Sep 17 00:00:00 2001
From: "J. King" <jking@jkingweb.ca>
Date: Wed, 28 Jan 2026 13:47:06 -0500
Subject: [PATCH 2/4] Mark the test for parser issue 66 as tentative

We don't necessarily want to encourage implementations to follow the "correct" behaviour since it's counterintuitive.
---
 ...t-mistyped.html => tentative-nested-microformat-mistyped.html} | 0
 ...t-mistyped.json => tentative-nested-microformat-mistyped.json} | 0
 2 files changed, 0 insertions(+), 0 deletions(-)
 rename tests/microformats-v2-unit/nested/{nested-microformat-mistyped.html => tentative-nested-microformat-mistyped.html} (100%)
 rename tests/microformats-v2-unit/nested/{nested-microformat-mistyped.json => tentative-nested-microformat-mistyped.json} (100%)

diff --git a/tests/microformats-v2-unit/nested/nested-microformat-mistyped.html b/tests/microformats-v2-unit/nested/tentative-nested-microformat-mistyped.html
similarity index 100%
rename from tests/microformats-v2-unit/nested/nested-microformat-mistyped.html
rename to tests/microformats-v2-unit/nested/tentative-nested-microformat-mistyped.html
diff --git a/tests/microformats-v2-unit/nested/nested-microformat-mistyped.json b/tests/microformats-v2-unit/nested/tentative-nested-microformat-mistyped.json
similarity index 100%
rename from tests/microformats-v2-unit/nested/nested-microformat-mistyped.json
rename to tests/microformats-v2-unit/nested/tentative-nested-microformat-mistyped.json

From 315958a44d1675fdc33a2e80683426ebde1a03e8 Mon Sep 17 00:00:00 2001
From: "J. King" <jking@jkingweb.ca>
Date: Fri, 30 Jan 2026 10:09:55 -0500
Subject: [PATCH 3/4] Cover more cases in VCP dt- property processing

---
 .../microformats-v2-unit/value/value-dt.html  | 55 +++++++++++++------
 .../microformats-v2-unit/value/value-dt.json  | 28 ++++++++--
 2 files changed, 60 insertions(+), 23 deletions(-)

diff --git a/tests/microformats-v2-unit/value/value-dt.html b/tests/microformats-v2-unit/value/value-dt.html
index d825402..dc9d13e 100644
--- a/tests/microformats-v2-unit/value/value-dt.html
+++ b/tests/microformats-v2-unit/value/value-dt.html
@@ -38,8 +38,12 @@
 <div class="h-test-acceptable">
     <div class="p-name">NotPartOfTest</div>
     <div class="dt-not-a-date">Valid <span class="value">NotADate</span> Valid</div>
-    <div class="dt-1-with-tz">Invalid <span class="value">2000-01-01 00:00:00+00:00</span> Invalid</div>
-    <div class="dt-2-with-tz">Invalid <span class="value">2000-01-01</span><span class="value">00:00:00+00:00</span> Invalid</div> 
+    <div class="dt-time-only">Valid <span class="value">00:00:00+0000</span> Valid</div>
+    <div class="dt-1-with-tz">Invalid <span class="value">2000-01-01 00:00:00+0000</span> Invalid</div>
+    <div class="dt-2-with-tz">Invalid <span class="value">2000-01-01</span><span class="value">00:00:00+0000</span> Invalid</div>
+    <div class="dt-3-with-tz">Invalid <span class="value">2000-01-01 00:00:00</span><span class="value">+0000</span> Invalid</div>
+    <div class="dt-4-with-tz">Invalid <span class="value">2000-01-01</span><span class="value">00:00:00</span><span class="value">+0000</span> Invalid</div>
+    <div class="dt-misordered">Invalid <span class="value">+0000</span><span class="value">00:00:00</span><span class="value">2000-01-01</span> Invalid</div>
     <div class="dt-1-first-wins">
         Invalid
         <span class="value">2000-01-01</span>
@@ -57,7 +61,22 @@
         Invalid
         <span class="value">2000-01-01</span>
         <span class="value">00:00:00</span>
-        <span class="value">00:00:00+00:00</span>
+        <span class="value">00:00:00+0000</span>
+        Invalid
+    </div>
+    <div class="dt-4-first-wins">
+        Invalid
+        <span class="value">2000-01-01</span>
+        <span class="value">+0000</span>
+        <span class="value">23:59:59+0000</span>
+        <span class="value">00:00:00</span>
+        Invalid
+    </div>
+    <div class="dt-5-first-wins">
+        Invalid
+        <span class="value">2000-01-01</span>
+        <span class="value">+0000</span>
+        <span class="value">23:59:59+0000</span>
         Invalid
     </div>
 </div>
@@ -78,46 +97,46 @@
 
 <div class="h-test-data">
     <div class="p-name">NotPartOfTest</div>
-    <div class="dt-filled">Invalid <data class="value" value="2000-01-01">Invalid</data> Invalid</div>
-    <div class="dt-empty">Va<data class="value" value="">l</data>id</div>
+    <div class="dt-filled">Invalid <data class="value" value="2000-01-01">2099-01-01</data> Invalid</div>
+    <div class="dt-empty">Valid <data class="value" value="">2099-01-01</data> Valid</div>
     <div class="dt-missing">Invalid <data class="value">2000-01-01</data> Invalid</div>
 </div>
 
 <div class="h-test-abbr">
     <div class="p-name">NotPartOfTest</div>
-    <div class="dt-filled">Invalid <abbr class="value" title="2000-01-01">Invalid</abbr> Invalid</div>
-    <div class="dt-empty">Va<abbr class="value" title="">l</abbr>id</div>
+    <div class="dt-filled">Invalid <abbr class="value" title="2000-01-01">2099-01-01</abbr> Invalid</div>
+    <div class="dt-empty">Valid <abbr class="value" title="">2099-01-01</abbr> Valid</div>
     <div class="dt-missing">Invalid <abbr class="value">2000-01-01</abbr> Invalid</div>
 </div>
 
 <!-- The datetime attribute on these elements only applies to date parsing, and not other VCP parsing -->
 <div class="h-test-time">
     <div class="p-name">NotPartOfTest</div>
-    <div class="dt-filled">Invalid <time class="value" datetime="2000-01-01">Invalid</time> Invalid</div>
-    <div class="dt-empty">Va<time class="value" datetime="">l</time>id</div>
+    <div class="dt-filled">Invalid <time class="value" datetime="2000-01-01">2099-01-01</time> Invalid</div>
+    <div class="dt-empty">Valid <time class="value" datetime="">2099-01-01</time> Valid</div>
     <div class="dt-missing">Invalid <time class="value">2000-01-01</time> Invalid</div>
 </div>
 
 <div class="h-test-ins">
     <div class="p-name">NotPartOfTest</div>
-    <div class="dt-filled">Invalid <ins class="value" datetime="2000-01-01">Invalid</ins> Invalid</div>
-    <div class="dt-empty">Va<ins class="value" datetime="">l</ins>id</div>
+    <div class="dt-filled">Invalid <ins class="value" datetime="2000-01-01">2099-01-01</ins> Invalid</div>
+    <div class="dt-empty">Valid <ins class="value" datetime="">2099-01-01</ins> Valid</div>
     <div class="dt-missing">Invalid <ins class="value">2000-01-01</ins> Invalid</div>
 </div>
 
 <div class="h-test-del">
     <div class="p-name">NotPartOfTest</div>
-    <div class="dt-filled">Invalid <del class="value" datetime="2000-01-01">Invalid</del> Invalid</div>
-    <div class="dt-empty">Va<del class="value" datetime="">l</del>id</div>
+    <div class="dt-filled">Invalid <del class="value" datetime="2000-01-01">2099-01-01</del> Invalid</div>
+    <div class="dt-empty">Valid <del class="value" datetime="">2099-01-01</del> Valid</div>
     <div class="dt-missing">Invalid <del class="value">2000-01-01</del> Invalid</div>
 </div>
 
 <!-- This test checks Value Class Pattern execution order within dt-property processing -->
 <div class="h-test-override">
     <div class="p-name">NotPartOfTest</div>
-    <time class="dt-time" datetime="Invalid">Invalid <span class="value">2000-01-01</span> Invalid</time>
-    <ins class="dt-ins" datetime="Invalid">Invalid <span class="value">2000-01-01</span> Invalid</ins>
-    <del class="dt-del" datetime="Invalid">Invalid <span class="value">2000-01-01</span> Invalid</del>
-    <abbr class="dt-abbr" title="Invalid">Invalid <span class="value">2000-01-01</span> Invalid</abbr>
-    <data class="dt-data" value="Invalid">Invalid <span class="value">2000-01-01</span> Invalid</data>
+    <time class="dt-time" datetime="2099-01-01">Invalid <span class="value">2000-01-01</span> Invalid</time>
+    <ins class="dt-ins" datetime="2099-01-01">Invalid <span class="value">2000-01-01</span> Invalid</ins>
+    <del class="dt-del" datetime="2099-01-01">Invalid <span class="value">2000-01-01</span> Invalid</del>
+    <abbr class="dt-abbr" title="2099-01-01">Invalid <span class="value">2000-01-01</span> Invalid</abbr>
+    <data class="dt-data" value="2099-01-01">Invalid <span class="value">2000-01-01</span> Invalid</data>
 </div>
diff --git a/tests/microformats-v2-unit/value/value-dt.json b/tests/microformats-v2-unit/value/value-dt.json
index 1625c09..1ef1e76 100644
--- a/tests/microformats-v2-unit/value/value-dt.json
+++ b/tests/microformats-v2-unit/value/value-dt.json
@@ -71,12 +71,24 @@
                 "not-a-date": [
                     "Valid NotADate Valid"
                 ],
+                "time-only": [
+                    "Valid 00:00:00+0000 Valid"
+                ],
                 "1-with-tz": [
                     "2000-01-01 00:00:00+0000"
                 ],
                 "2-with-tz": [
                     "2000-01-01 00:00:00+0000"
                 ],
+                "3-with-tz": [
+                    "2000-01-01 00:00:00+0000"
+                ],
+                "4-with-tz": [
+                    "2000-01-01 00:00:00+0000"
+                ],
+                "misordered": [
+                    "2000-01-01 00:00:00+0000"
+                ],
                 "1-first-wins": [
                     "2000-01-01"
                 ],
@@ -85,6 +97,12 @@
                 ],
                 "3-first-wins": [
                     "2000-01-01 00:00:00"
+                ],
+                "4-first-wins": [
+                    "2000-01-01 00:00:00+0000"
+                ],
+                "5-first-wins": [
+                    "2000-01-01"
                 ]
             }
         },
@@ -138,7 +156,7 @@
                     "2000-01-01"
                 ],
                 "empty": [
-                    "Valid"
+                    "Valid 2099-01-01 Valid"
                 ],
                 "missing": [
                     "2000-01-01"
@@ -157,7 +175,7 @@
                     "2000-01-01"
                 ],
                 "empty": [
-                    "Valid"
+                    "Valid 2099-01-01 Valid"
                 ],
                 "missing": [
                     "2000-01-01"
@@ -176,7 +194,7 @@
                     "2000-01-01"
                 ],
                 "empty": [
-                    "Valid"
+                    "Valid 2099-01-01 Valid"
                 ],
                 "missing": [
                     "2000-01-01"
@@ -195,7 +213,7 @@
                     "2000-01-01"
                 ],
                 "empty": [
-                    "Valid"
+                    "Valid 2099-01-01 Valid"
                 ],
                 "missing": [
                     "2000-01-01"
@@ -214,7 +232,7 @@
                     "2000-01-01"
                 ],
                 "empty": [
-                    "Valid"
+                    "Valid 2099-01-01 Valid"
                 ],
                 "missing": [
                     "2000-01-01"

From 42ea82a857661a50972bd36e4cffc1266b2932b5 Mon Sep 17 00:00:00 2001
From: "J. King" <jking@jkingweb.ca>
Date: Fri, 30 Jan 2026 13:34:53 -0500
Subject: [PATCH 4/4] Add tests for VCP implied date

---
 .../microformats-v2-unit/value/value-dt.html  | 18 ++++++-
 .../microformats-v2-unit/value/value-dt.json  | 48 +++++++++++++++++--
 2 files changed, 62 insertions(+), 4 deletions(-)

diff --git a/tests/microformats-v2-unit/value/value-dt.html b/tests/microformats-v2-unit/value/value-dt.html
index dc9d13e..6486c79 100644
--- a/tests/microformats-v2-unit/value/value-dt.html
+++ b/tests/microformats-v2-unit/value/value-dt.html
@@ -38,7 +38,6 @@
 <div class="h-test-acceptable">
     <div class="p-name">NotPartOfTest</div>
     <div class="dt-not-a-date">Valid <span class="value">NotADate</span> Valid</div>
-    <div class="dt-time-only">Valid <span class="value">00:00:00+0000</span> Valid</div>
     <div class="dt-1-with-tz">Invalid <span class="value">2000-01-01 00:00:00+0000</span> Invalid</div>
     <div class="dt-2-with-tz">Invalid <span class="value">2000-01-01</span><span class="value">00:00:00+0000</span> Invalid</div>
     <div class="dt-3-with-tz">Invalid <span class="value">2000-01-01 00:00:00</span><span class="value">+0000</span> Invalid</div>
@@ -81,6 +80,23 @@
     </div>
 </div>
 
+<div class="h-test-implied-date-missing">
+    <div class="p-name">NotPartOfTest</div>
+    <div class="dt-time-only">Valid <span class="value">00:00:00+0000</span> Valid</div>
+</div>
+
+<div class="h-test-implied-date-before">
+    <div class="p-name">NotPartOfTest</div>
+    <div class="dt-implied">Invalid <span class="value">2000-01-01 23:59:59+0000</span> Invalid</div>
+    <div class="dt-time-only">Invalid <span class="value">00:00:00+0000</span> Invalid</div>
+</div>
+
+<div class="h-test-implied-date-after">
+    <div class="p-name">NotPartOfTest</div>
+    <div class="dt-time-only">Invalid <span class="value">00:00:00+0000</span> Invalid</div>
+    <div class="dt-implied">Invalid <span class="value">2000-01-01 23:59:59+0000</span> Invalid</div>
+</div>
+
 <div class="h-test-img">
     <div class="p-name">NotPartOfTest</div>
     <div class="dt-filled">Invalid <img class="value" alt="2000-01-01"> Invalid</div>
diff --git a/tests/microformats-v2-unit/value/value-dt.json b/tests/microformats-v2-unit/value/value-dt.json
index 1ef1e76..982d44e 100644
--- a/tests/microformats-v2-unit/value/value-dt.json
+++ b/tests/microformats-v2-unit/value/value-dt.json
@@ -71,9 +71,6 @@
                 "not-a-date": [
                     "Valid NotADate Valid"
                 ],
-                "time-only": [
-                    "Valid 00:00:00+0000 Valid"
-                ],
                 "1-with-tz": [
                     "2000-01-01 00:00:00+0000"
                 ],
@@ -106,6 +103,51 @@
                 ]
             }
         },
+        {
+            "type": [
+                "h-test-implied-date-missing"
+            ],
+            "properties": {
+                "name": [
+                    "NotPartOfTest"
+                ],
+                "time-only": [
+                    "Valid 00:00:00+0000 Valid"
+                ]
+            }
+        },
+        {
+            "type": [
+                "h-test-implied-date-before"
+            ],
+            "properties": {
+                "name": [
+                    "NotPartOfTest"
+                ],
+                "implied": [
+                    "2000-01-01 23:59:59+0000"
+                ],
+                "time-only": [
+                    "2000-01-01 00:00:00+0000"
+                ]
+            }
+        },
+        {
+            "type": [
+                "h-test-implied-date-after"
+            ],
+            "properties": {
+                "name": [
+                    "NotPartOfTest"
+                ],
+                "time-only": [
+                    "2000-01-01 00:00:00+0000"
+                ],
+                "implied": [
+                    "2000-01-01 23:59:59+0000"
+                ]
+            }
+        },
         {
             "type": [
                 "h-test-img"