⌛ 原子时分 ↔ 恒星日Atomus (medieval) to Sidereal day
原子时分与恒星日互算（1 atomus = 1.856922055e-06 sidereal d）。本地换算，附常用相关单位。Convert atomus (medieval) and sidereal day (1 atomus = 1.856922055e-06 sidereal d). Runs locally with related units.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「原子时分 ↔ 恒星日」是什么？What is the Atomus (medieval) to Sidereal day tool?
原子时分与恒星日互算（1 atomus = 1.856922055e-06 sidereal d）。本地换算，附常用相关单位。Convert atomus (medieval) and sidereal day (1 atomus = 1.856922055e-06 sidereal d). Runs locally with related units.
如何使用「原子时分 ↔ 恒星日」？How do I use the Atomus (medieval) to Sidereal day tool?
在「原子时分 ↔ 恒星日」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Atomus (medieval) to Sidereal day and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 原子时分等于多少恒星日？How many sidereal day in 1 atomus (medieval)?
1 atomus = 1.856922055e-06 sidereal d（按国际定义系数）。1 atomus = 1.856922055e-06 sidereal d (international definition).
如何把原子时分换算成恒星日？How do I convert atomus (medieval) to sidereal day?
结果 = 数值 × 1.856922055e-06。例如 538525.5656 atomus = 1 sidereal d。result = value × 1.856922055e-06. Example: 538525.5656 atomus = 1 sidereal d.
原子时分/恒星日属于哪类单位？What kind of units are atomus (medieval)/sidereal day?
二者同属「时间」量纲，可安全互算；也可打开「time-unit-converter」做多单位对照。Both are time units; see also the time unit converter hub.
换算系数准确吗？Are the conversion factors exact?
「原子时分 ↔ 恒星日」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Atomus (medieval) to Sidereal day uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「原子时分 ↔ 恒星日」免费吗？需要注册吗？Is the Atomus (medieval) to Sidereal day free? Do I need an account?
「原子时分 ↔ 恒星日」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 Atomus (medieval) to Sidereal day is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.