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How to automatically get the release date of the latest Magic: The Gathering Standard set?

I’m building a tool to check Magic: The Gathering deck legality in custom formats. I want to update the formats automatically whenever a new Standard-legal set releases.

Is there a programmatic way to fetch the release date of the latest Standard set, ideally via an API or a reliable data source?

Some sample code of what I'd like to do:

```python
import requests
import json
import os

LAST_UPDATED_FILE = "last_updated.json"
SCRYFALL_SETS_API = "https://api.scryfall.com/sets"


def fetch_sets_data():
    """Fetch data from Scryfall sets API."""
    response = requests.get(SCRYFALL_SETS_API)
    response.raise_for_status()
    return response.json()


def load_saved_updated_at(file_path=LAST_UPDATED_FILE):
    """Load previously saved updated_at from file."""
    if os.path.exists(file_path):
        with open(file_path, "r") as f:
            data = json.load(f)
            return data.get("updated_at")
    return None


def save_updated_at(updated_at, file_path=LAST_UPDATED_FILE):
    """Save updated_at to file."""
    with open(file_path, "w") as f:
        json.dump({"updated_at": updated_at}, f)


def check_for_update(latest_updated_at, saved_updated_at):
    """Return True if update detected, else False. Print 'updating' if True."""
    if saved_updated_at is None or latest_updated_at > saved_updated_at:
        save_updated_at(latest_updated_at)
        return True
    return False


def main():
    data = fetch_sets_data()
    latest_updated_at = data.get("updated_at")  # hypothetical field
    saved_updated_at = load_saved_updated_at()
    if check_for_update(latest_updated_at, saved_updated_at):
        print(Updating)


if __name__ == "__main__":
    main()

```