UTC, Naive funtionality without chrono

.github/workflows/tests.yml

@@ -0,0 +1,30 @@
+name: Build
+
+on:
+  pull_request:
+    branches:
+      - "**"
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install "tox<5" tox-gh-actions "poetry<1.8"
+    - name: Test with tox
+      run: tox