Github on-schedule action workflow executes in delay or not at all - python-3.x

Question

I have 2 workflows inside my repository - one that is a CI that runs on each push and one that is supposed to execute a script on a scheduled time.
The scheduled workflow looks like that:
name: scheduled-run
on:
schedule:
# UTC time
- cron: "45 14 1,15,30 * *"
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout#v2
- name: Set up Python 3.7
uses: actions/setup-python#v2
with:
python-version: 3.7
- name: Install dependencies
run: |
python -m pip install --upgrade pip
if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
- name: Execute python script
env:
TELEGRAM_API_TOKEN: ${{ secrets.TELEGRAM_API_TOKEN }}
TELEGRAM_CHAT_ID: ${{ secrets.TELEGRAM_CHAT_ID }}
AWS_KEY_ID: ${{ secrets.AWS_KEY_ID }}
AWS_SECRET_KEY: ${{ secrets.AWS_SECRET_KEY }}
run: |
python cci.py -r
No matter how and to when I set the cron schedule - the workflow does not start! Sometimes it would start way after the supposed time but mostly it does not start. I have tried to recreate the workflow from scratch but it doesn't seem to help. What's going on here?

Answer 1

I tested your workflow with slightly changed cron
name: scheduled-run
on:
schedule:
# UTC time
- cron: "55 13,14,15 1,4,15,30 * *"
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout#v2
- name: Set up Python 3.7
uses: actions/setup-python#v2
with:
python-version: 3.7
And it works as expected:
Please try with sth smaller (like above) and with slightly different cron so you would not wait long to verify your changes.