# B.2\. 日期/时间关键字 [Table B-1](#calibre_link-682)显示被当做月份名字缩写的记号。 **Table B-1\. Month Names** | 月份 | 缩写 | | --- | --- | | January | Jan | | February | Feb | | March | Mar | | April | Apr | | May | | June | Jun | | July | Jul | | August | Aug | | September | Sep, Sept | | October | Oct | | November | Nov | | December | Dec | [Table B-2](#calibre_link-683)显示被识别为星期几的名字。 **Table B-2\. Day of the Week Names** | 星期 | 缩写 | | --- | --- | | Sunday | Sun | | Monday | Mon | | Tuesday | Tue, Tues | | Wednesday | Wed, Weds | | Thursday | Thu, Thur, Thurs | | Friday | Fri | | Saturday | Sat | [Table B-3](#calibre_link-684)显示用于各种修饰用途的记号。 **Table B-3\. 日期/时间字段修饰词** | 标识符 | 描述 | | --- | --- | | `AM` | 12:00之前的时间 | | `AT` | 忽略 | | `JULIAN`, `JD`, `J` | 下一个字段是儒略日 | | `ON` | 忽略 | | `PM` | 12:00以及之后的时间 | | `T` | 下一个字段是时间 |