Will recognize the era abbreviations in front of the year; that is, either the single-character case-insensitive Latin alphabet abbreviation or the single-character Kanji abbreviation.
英
美
- 将识别年份前的纪元缩写;即,要么是单字符不区分大小写的拉丁字母缩写,要么是单字符日语汉字的缩写。