From a568a1ca048a325f3a713f15c9be3762420b686b Mon Sep 17 00:00:00 2001
From: Simon Binder <simon@journeyapps.com>
Date: Thu, 4 Dec 2025 11:55:52 +0100
Subject: [PATCH] Timestamps: Emit in UTC

---
 .changeset/rare-cobras-post.md | 5 +++++
 lib/datetime_decode.js         | 9 +++++----
 2 files changed, 10 insertions(+), 4 deletions(-)
 create mode 100644 .changeset/rare-cobras-post.md

diff --git a/.changeset/rare-cobras-post.md b/.changeset/rare-cobras-post.md
new file mode 100644
index 0000000..1aa1af5
--- /dev/null
+++ b/.changeset/rare-cobras-post.md
@@ -0,0 +1,5 @@
+---
+'@powersync/mysql-zongji': minor
+---
+
+When the option to render timestamps as strings is enabled, unconditionally emit those values in UTC for consistency.
diff --git a/lib/datetime_decode.js b/lib/datetime_decode.js
index c7bb56e..04fe8d5 100644
--- a/lib/datetime_decode.js
+++ b/lib/datetime_decode.js
@@ -99,14 +99,15 @@ exports.getTimeStamp = function (
   if (secondsFromEpoch === 0 && (!fraction || fraction.value === 0)) {
     return '0000-00-00 00:00:00' + getFractionString(fraction);
   }
+
   return (
-    getDateString(dateObject.getFullYear(), dateObject.getMonth() + 1, dateObject.getDate()) +
+    getDateString(dateObject.getUTCFullYear(), dateObject.getUTCMonth() + 1, dateObject.getUTCDate()) +
     ' ' +
-    common.zeroPad(dateObject.getHours(), 2) +
+    common.zeroPad(dateObject.getUTCHours(), 2) +
     ':' +
-    common.zeroPad(dateObject.getMinutes(), 2) +
+    common.zeroPad(dateObject.getUTCMinutes(), 2) +
     ':' +
-    common.zeroPad(dateObject.getSeconds(), 2) +
+    common.zeroPad(dateObject.getUTCSeconds(), 2) +
     getFractionString(fraction)
   );
 };