diff --git a/astrbot/core/cron/manager.py b/astrbot/core/cron/manager.py
index 5b2c6ee9e..aa11bb601 100644
--- a/astrbot/core/cron/manager.py
+++ b/astrbot/core/cron/manager.py
@@ -196,7 +196,9 @@ class CronJobManager:
 
     def _get_next_run_time(self, job_id: str):
         aps_job = self.scheduler.get_job(job_id)
-        return aps_job.next_run_time if aps_job else None
+        if not aps_job or aps_job.next_run_time is None:
+            return None
+        return aps_job.next_run_time.astimezone(timezone.utc)
 
     async def _run_job(self, job_id: str) -> None:
         job = await self.db.get_cron_job(job_id)
diff --git a/astrbot/dashboard/routes/cron.py b/astrbot/dashboard/routes/cron.py
index af26c6525..8417c970c 100644
--- a/astrbot/dashboard/routes/cron.py
+++ b/astrbot/dashboard/routes/cron.py
@@ -1,5 +1,5 @@
 import traceback
-from datetime import datetime
+from datetime import datetime, timezone
 
 from quart import jsonify, request
 
@@ -26,8 +26,12 @@ class CronRoute(Route):
     def _serialize_job(self, job) -> dict:
         data = job.model_dump() if hasattr(job, "model_dump") else job.__dict__
         for k in ["created_at", "updated_at", "last_run_at", "next_run_time"]:
-            if isinstance(data.get(k), datetime):
-                data[k] = data[k].isoformat()
+            v = data.get(k)
+            if isinstance(v, datetime):
+                # Attach UTC
+                if v.tzinfo is None:
+                    v = v.replace(tzinfo=timezone.utc)
+                data[k] = v.isoformat()
         # expose note explicitly for UI (prefer payload.note then description)
         payload = data.get("payload") or {}
         data["note"] = payload.get("note") or data.get("description") or ""