🕰️ 十二时辰对照换算Chinese Double-Hour (Shichen) Converter
把现代时间换算成中国古代十二时辰：子丑寅卯等时辰、初正与几刻（如「午时三刻」）、夜间几更、对应生肖和古称，并附完整的十二时辰对照表。Convert clock time to the traditional Chinese double-hours (shichen): the earthly branch, the 初/正 half and quarter (e.g. 午时三刻), the night watch, the zodiac animal and the classical name, with a full reference table.
使用说明与常见问题How-to & FAQ
「十二时辰对照换算」是什么？What is the Chinese Double-Hour (Shichen) Converter tool?
把现代时间换算成中国古代十二时辰：子丑寅卯等时辰、初正与几刻（如「午时三刻」）、夜间几更、对应生肖和古称，并附完整的十二时辰对照表。Convert clock time to the traditional Chinese double-hours (shichen): the earthly branch, the 初/正 half and quarter (e.g. 午时三刻), the night watch, the zodiac animal and the classical name, with a full reference table.
如何使用「十二时辰对照换算」？How do I use the Chinese Double-Hour (Shichen) Converter?
输入时间（每行一个，默认第一行是当前时间），立即显示对应的时辰、刻和更。点「现在」可以填入当前时间。下方表格列出全部十二时辰的起止时间。Enter times (one per line; the first defaults to now) to see the double-hour, quarter and night watch. Click Now to insert the current time. The table lists all twelve double-hours.
「午时三刻」是几点？What time is 午时三刻?
午时是 11:00–13:00，前一小时为「午初」，后一小时为「午正」，每小时分 4 刻（每刻 15 分钟）。「午时三刻」通常指午初三刻，即 11:45 左右。午时 runs 11:00–13:00: the first hour is 午初 and the second 午正, each split into four 15-minute quarters. 午时三刻 usually means 午初三刻, about 11:45.
子时属于前一天还是后一天？Does 子时 belong to the previous or next day?
子时是 23:00–01:00，跨越午夜。传统历法以子初（23:00）为新一天的开始，所以 23:30 在传统上一般算作第二天的子时。子时 is 23:00–01:00 and spans midnight. Traditionally the new day starts at 子初 (23:00), so 23:30 usually counts as the next day’s 子时.
「十二时辰对照换算」免费吗？数据会上传吗？Is the Chinese Double-Hour (Shichen) Converter free? Is my data uploaded?
「十二时辰对照换算」完全免费，无需注册或安装，手机和电脑都能用；所有处理都在你的浏览器本地完成，输入的内容和文件不会上传到服务器。The Chinese Double-Hour (Shichen) Converter is completely free with no sign-up or install and works on phones and desktops; everything runs locally in your browser and nothing you enter is uploaded.