From 09df4ad0092c6b96e5e68f8346d467b7864d723d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hevesi=20Gerg=C5=91?= <you@example.com>
Date: Tue, 6 Jan 2026 13:00:11 +0100
Subject: [PATCH 1/3] Include IssueTime in XML serialization when set,
 formatted as H:i:s in Invoice xml tag

---
 src/Invoice.php | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/Invoice.php b/src/Invoice.php
index 141d9d9..8102f56 100644
--- a/src/Invoice.php
+++ b/src/Invoice.php
@@ -21,6 +21,7 @@ class Invoice implements XmlSerializable, XmlDeserializable
     private $id;
     private $copyIndicator;
     private $issueDate;
+    private ?DateTime $issueTime;
     protected $invoiceTypeCode = InvoiceTypeCode::INVOICE;
     private $note;
     private $taxPointDate;
@@ -144,6 +145,25 @@ public function setIssueDate(?DateTime $issueDate)
         return $this;
     }
 
+    /**
+     * @return DateTime
+     */
+    public function getIssueTime() : ?DateTime
+    {
+        return $this->issueTime ?? null;
+    }
+
+    /**
+     * @param DateTime $issueTime
+     * @return static
+     */
+    public function setIssueTime(?DateTime $issueTime = null) : self
+    {
+        $this->issueTime = $issueTime;
+
+        return $this;
+    }
+
     /**
      * @return DateTime
      */
@@ -756,6 +776,12 @@ public function xmlSerialize(Writer $writer): void
             Schema::CBC . "IssueDate" => $this->issueDate->format("Y-m-d"),
         ]);
 
+        if (isset($this->issueTime)) {
+            $writer->write([
+                Schema::CBC . 'IssueTime' => $this->issueTime->format('H:i:s'),
+            ]);
+        }
+
         if ($this->dueDate !== null && $this->xmlTagName === "Invoice") {
             $writer->write([
                 Schema::CBC . "DueDate" => $this->dueDate->format("Y-m-d"),

From 3cabacd0495e12016b2eca521141f733107d8f2b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hevesi=20Gerg=C5=91?= <you@example.com>
Date: Tue, 6 Jan 2026 13:25:34 +0100
Subject: [PATCH 2/3] Added issueTime for the SimpleInvoiceTest

---
 tests/Write/SimpleInvoiceTest.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/Write/SimpleInvoiceTest.php b/tests/Write/SimpleInvoiceTest.php
index 8b6a87a..5208312 100644
--- a/tests/Write/SimpleInvoiceTest.php
+++ b/tests/Write/SimpleInvoiceTest.php
@@ -138,6 +138,7 @@ public function testIfXMLIsValid()
             ->setId(1234)
             ->setCopyIndicator(false)
             ->setIssueDate(new \DateTime())
+            ->setIssueTime(new \DateTime())
             ->setAccountingSupplierParty($accountingSupplierParty)
             ->setAccountingCustomerParty($accountingCustomerParty)
             ->setInvoiceLines($invoiceLines)

From 4ae1bc6374cdb1687cfe7114fa9b8e48552dfdf3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hevesi=20Gerg=C5=91?= <you@example.com>
Date: Wed, 7 Jan 2026 13:50:21 +0100
Subject: [PATCH 3/3] IssueTime is filled in deserializeTag

---
 src/Invoice.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Invoice.php b/src/Invoice.php
index 8102f56..e06d12b 100644
--- a/src/Invoice.php
+++ b/src/Invoice.php
@@ -1022,6 +1022,14 @@ protected static function deserializedTag(array $mixedContent)
                     ),
                 )->toDateTime(),
             )
+            ->setIssueTime(
+                Carbon::parse(
+                    ReaderHelper::getTagValue(
+                        Schema::CBC . "IssueTime",
+                        $collection,
+                    ),
+                )->toDateTime(),
+            )
             ->setDueDate(
                 Carbon::parse(
                     ReaderHelper::getTagValue(