From 7b9cde1daf013287c412e6f8e7121b5d97b37084 Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Tue, 30 Sep 2025 11:07:31 +0200
Subject: [PATCH] [Annotation] Fix some timezone issues when getting a date
 from the date picker (bug 1991584)

---
 src/display/annotation_layer.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/display/annotation_layer.js b/src/display/annotation_layer.js
index 126bb7131..4339d6284 100644
--- a/src/display/annotation_layer.js
+++ b/src/display/annotation_layer.js
@@ -1671,6 +1671,14 @@ class TextWidgetAnnotationElement extends WidgetAnnotationElement {
               ).valueOf();
               target.step = "";
             } else {
+              // Unfortunately, when the date is "2025-09-23", the parser
+              // converts it to UTC time which may lead to the date being off by
+              // one day depending on the timezone. To workaround this, we
+              // append "T00:00" to the date so that it's parsed as local
+              // time (bug 1989874).
+              if (!value.includes("T")) {
+                value = `${value}T00:00`;
+              }
               value = new Date(value).valueOf();
             }
             target.type = "text";