diff --git a/.github/trigger.json b/.github/trigger.json
new file mode 100644
index 0000000..0985cd5
--- /dev/null
+++ b/.github/trigger.json
@@ -0,0 +1,3 @@
+{
+  "trigger": 0
+}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index acb96c1..23b9698 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,8 +6,7 @@ on:
       - "**"
   pull_request:
     branches:
-      - main
-      - dev
+      - "**"
 
 jobs:
   build:
diff --git a/.github/workflows/data.yml b/.github/workflows/data.yml
new file mode 100644
index 0000000..104cd51
--- /dev/null
+++ b/.github/workflows/data.yml
@@ -0,0 +1,68 @@
+name: Update Calendar Data
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 * * * *"
+  push:
+    branches:
+      - "**"
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+          fetch-depth: 2
+
+      - name: Set up Python environment
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+      - name: Run crawler
+        shell: bash
+        run: python crawler.py
+
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Go Build
+        run: go build -o . main
+
+      - name: Generate ICS
+        run: ./main
+
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          file_pattern: docs/*.html docs/*.ics data/*.txt
+          commit_message: update calendar data automatically
+          commit_user_name: bugstop
+          commit_user_email: github@umm.one
+
+      - name: Get last commit message
+        id: last-commit-message
+        run: |
+          echo "::set-output name=msg::$(git log -1 --pretty=%s)"
+
+      - name: Update README
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          file_pattern: README.md
+          commit_message: ${{ steps.last-commit-message.outputs.msg }}
+          commit_user_name: bugstop
+          commit_user_email: github@umm.one
+          commit_options: '--amend --no-edit'
+          push_options: '--force'
+          skip_fetch: true
diff --git a/.github/workflows/ics.yml b/.github/workflows/ics.yml
deleted file mode 100644
index f6b0124..0000000
--- a/.github/workflows/ics.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: ICS Generator
-
-on:
-  pull_request:
-  push:
-    branches:
-      - "**"
-
-jobs:
-  commit:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          ref: ${{ github.head_ref }}
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.17
-
-      - name: Go Build
-        run: go build -o . main
-
-      - name: Generate ICS
-        run: ./main
-
-      - uses: stefanzweifel/git-auto-commit-action@v4
-        with:
-          file_pattern: docs/*.html docs/*.ics
-          commit_message: generate .ics file automatically
-          commit_user_name: bugstep
-          commit_user_email: github@isaacx.com
diff --git a/README.md b/README.md
index 90dfd84..9977803 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 subscription link of public holidays in mainland China
 
-> data updated at: March 27, 2022
+> Calendar data updated at: March 27, 2022.
 
 ## Demo
 
diff --git a/crawler.py b/crawler.py
index 2b0708d..a495b7a 100644
--- a/crawler.py
+++ b/crawler.py
@@ -1,6 +1,6 @@
 import os
 import re
-from datetime import datetime
+from datetime import datetime, timezone, timedelta
 from typing import Iterator, Tuple
 
 import requests
@@ -24,16 +24,16 @@ def main():
 
         with open(file, 'w') as f:
             f.write(
-                f"{comments[0]} ({datetime.now().strftime('%-m/%-d/%Y')})\n"
+                f"{comments[0]} ({beijing_time().strftime('%-m/%-d/%Y')})\n"
                 f"{comments[1]}\n\n// source: {link}\n\n{holidays}"
             )
 
-    update_info = "> data updated at: "
+    update_info = "> Calendar data updated at: "
     with open('./README.md', 'r') as f:
         content = f.read().split('\n')
     for i in range(len(content)):
         if content[i].startswith(update_info):
-            content[i] = update_info + datetime.now().strftime("%B %-d, %Y")
+            content[i] = update_info + beijing_time().strftime("%B %-d, %Y")
     with open('./README.md', 'w') as f:
         f.write('\n'.join(content))
 
@@ -102,5 +102,10 @@ def source() -> Iterator[Tuple[str, str]]:
         yield match.group('year'), match.group('link')
 
 
+def beijing_time() -> datetime:
+    utc_time = datetime.utcnow().replace(tzinfo=timezone.utc)
+    return utc_time.astimezone(timezone(timedelta(hours=8)))
+
+
 if __name__ == '__main__':
     main()