免费 · 日期与时间
在线闹钟.
在浏览器中设置闹钟，支持标签、提示音、5 分钟稍后提醒和通知。需保持标签页打开且电脑不休眠。
RUNS IN YOUR BROWSER
Loading the clock…
使用方法: 在线闹钟
输入数据或选择文件，调整设置并生成结果。复制或下载之前，请检查结果。
限制与支持格式
输入内容在您的设备上处理。
英语技术说明
The tab must stay open, the sound on and the computer awake; sleeping devices do not ring. Use your phone’s alarm for important wake-ups.
The next occurrence of the chosen time is computed (today or tomorrow) and checked twice a second; the chime is synthesised with the Web Audio API.
An alarm set at 23:00 for 07:00 shows “in 8 h 0 min” and rings the next morning if the computer stays awake.