From 77893141d6cb591cfd07a9b6220da9aa68dae0d8 Mon Sep 17 00:00:00 2001
From: Zheheng Ye <60506557+domonnss@users.noreply.github.com>
Date: Mon, 31 Aug 2026 12:40:12 +0800
Subject: [PATCH] Preserve timezone in calendar range queries

Format FullCalendar range boundaries before refetching so Moment does not serialize them as UTC. This prevents the final timezone-offset hours of a view from being omitted. Fixes #189.
---
 ui/src/timespan/calendar/CalendarPage.tsx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ui/src/timespan/calendar/CalendarPage.tsx b/ui/src/timespan/calendar/CalendarPage.tsx
index 0ebd1435..e407f181 100644
--- a/ui/src/timespan/calendar/CalendarPage.tsx
+++ b/ui/src/timespan/calendar/CalendarPage.tsx
@@ -218,7 +218,10 @@ export const CalendarPage: React.FC = () => {
                     defaultView="timeGridWeek"
                     rerenderDelay={30}
                     datesRender={(x) => {
-                        const range = {start: moment(x.view.currentStart), end: moment(x.view.currentEnd)};
+                        const range = {
+                            start: moment(x.view.currentStart).format(),
+                            end: moment(x.view.currentEnd).format(),
+                        };
                         if (
                             !moment(timeSpansResult.variables.start).isSame(range.start) ||
                             !moment(timeSpansResult.variables.end).isSame(range.end)