diff --git a/backend/src/services/schedule.js b/backend/src/services/schedule.js
index 818ae50..d8113cc 100644
--- a/backend/src/services/schedule.js
+++ b/backend/src/services/schedule.js
@@ -86,6 +86,7 @@ export function formatSchedule(rawSchedule, members = []) {
     id: rawSchedule.id,
     title: rawSchedule.title,
     date: normalizeDate(rawSchedule.date),
+    datePrecision: rawSchedule.date_precision || 'day',
     time: rawSchedule.time || null,
     category: {
       id: rawSchedule.category_id,
@@ -268,6 +269,7 @@ export async function getScheduleDetail(db, id, getXProfile = null) {
     id: s.id,
     title: s.title,
     date: normalizeDate(s.date),
+    datePrecision: s.date_precision || 'day',
     time: s.time || null,
     category: {
       id: s.category_id,
@@ -470,6 +472,7 @@ const SCHEDULE_LIST_SQL = `
     s.id,
     s.title,
     s.date,
+    s.date_precision,
     s.time,
     s.category_id,
     c.name as category_name,