0 3 * * 1-5 curl http://127.0.0.1:10001/send_today_lessons_to_chat 0 15 * * 1-5 curl http://127.0.0.1:10001/send_tomorrow_lessons_to_chat 0 5 20-31 12 * curl http://127.0.0.1:10001/send_new_year_to_chat