Py Screapy

import time
import webbrowser
import requests
from datetime import datetime

found = False
while not found:
    today = datetime.today()
    try:
        r = requests.get(url = API_URL)
        data = r.json()
        next_slot = datetime.strptime(data['next_slot'], '%Y-%m-%d')
        print(f'Next slot: {next_slot}')
        if((next_slot - today).days < 1):
            webbrowser.open(URL)
            found = True
        else:
            time.sleep(10)
    except KeyError:
        continue
Amused Alligator