✅ 校验时钟时间Validate Clock Time
逐行检查是否为有效的 24 小时制时间 HH:MM 或 HH:MM:SS，每行给出结论和原因。本地处理。Check line by line whether each entry is a valid 24-hour HH:MM or HH:MM:SS time, with a verdict and reason per line. Processed locally.
使用说明与常见问题How-to & FAQ
「校验时钟时间」是什么？What is the Validate Clock Time tool?
逐行检查是否为有效的 24 小时制时间 HH:MM 或 HH:MM:SS，每行给出结论和原因。本地处理。Check line by line whether each entry is a valid 24-hour HH:MM or HH:MM:SS time, with a verdict and reason per line. Processed locally.
如何使用「校验时钟时间」？How do I use the Validate Clock Time tool?
每行输入一个要检查的时间，下方逐行显示“有效”或“无效”及原因。Enter one time per line and each line gets a valid or invalid verdict with the reason below.
24:00 算有效吗？Is 24:00 valid?
算，但只作为“一天的结束”：24:00 和 24:00:00 有效，等同于次日 00:00:00；24:01、24:00:01 等无效。Yes, but only as the end of a day: 24:00 and 24:00:00 are valid and mean the same instant as 00:00:00 the next day; 24:01, 24:00:01 and so on are invalid.
23:59:60 算有效吗？Is 23:59:60 valid?
不算。闰秒只在国际地球自转服务（IERS）公告的个别 UTC 日期的 23:59:60 出现，不是普通钟面时间，所以秒数一律要求 00–59，并在结果中说明原因。No. A leap second only appears as 23:59:60 UTC on particular dates announced by the IERS and is not an ordinary clock time, so seconds must be 00 to 59; the result explains why.
可以一次检查多个时间吗？Can I check several times at once?
可以，每行一个，空行跳过；每一行都单独给出“有效/无效”和原因，多行时前面标出行号。Yes, one per line with blank lines skipped. Every line gets its own valid/invalid verdict and reason, prefixed with its line number when there are several.
和时区有关吗？Do time zones matter?
无关，这里只处理钟面时间或日历日期，不读取设备时钟，也不考虑夏令时。No. It works on clock readings or calendar dates only, never reads your device clock and ignores daylight saving time.
「校验时钟时间」免费吗？需要注册吗？Is the Validate Clock Time tool free? Do I need an account?
「校验时钟时间」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Validate Clock Time tool is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.