nonebot2/docs/guide/code/awesome-bot-6/awesome/plugins/scheduler.py

from datetime import datetime

import nonebot
import pytz
from aiocqhttp.exceptions import Error as CQHttpError


@nonebot.scheduler.scheduled_job('cron', hour='*')
async def _():
    bot = nonebot.get_bot()
    now = datetime.now(pytz.timezone('Asia/Shanghai'))
    try:
        await bot.send_group_msg(group_id=672076603,
                                 message=f'现在{now.hour}点整啦！')
    except CQHttpError:
        pass