[Bug] Regarding the system parameter $[yyyyMMdd-1], when the system timezone is set to US West (America/Los_Angeles), there is a Daylight Saving Time (DST) transition issue where a day only has 23 hours.

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What happened

Regarding the system parameter $[yyyyMMdd+N], when the system timezone is set to US West (America/Los_Angeles), there is a Daylight Saving Time (DST) transition issue where a day only has 23 hours.

In the code, day-based addition and subtraction is implemented using minutes, specifically through the calcMinutes method. The code hardcodes the calculation as 6024(%s). However, for the US West (Los Angeles) timezone, Daylight Saving Time (DST) transitions occur, causing the second Sunday of March to jump from 01:59:59 to 03:00:00—effectively losing one hour and making that day only 23 hours long. As a result, $[yyyyMMdd-1] subtracts one extra hour, leading to a two-day offset issue.

代码里针对天的加减是按照分钟去实现的,具体方法为calcMinutes,代码里硬编码为60×24×(%s),固定为24小时(不合理),对于美西洛杉矶时区存在冬夏转换导致三月的第二个星期日 01:59:59 会调到03:00:00 因此少了一个小时 只有23小时问题,因此$[yyyyMMdd-1] 会被多减一个小时导致少俩天问题

here is my Test Case `// 启动前设置时区 TimeZone.setDefault(TimeZone.getTimeZone("America/Los_Angeles")); // 方法1: 使用 java.time 包 (推荐，Java 8+) ZonedDateTime laDateTime = ZonedDateTime.of( 2026, 3, 9, // 年, 月, 日 0, 10, 0, // 时, 分, 秒 0, // 纳秒 ZoneId.of("America/Los_Angeles") // 洛杉矶时区 );

    // 转换为 Date 对象
    Date date = Date.from(laDateTime.toInstant());
    //System.out.println(TimePlaceholderUtils.getPlaceHolderTime("$[week_last_day(yyyy-MM-dd,0) - 1]", date));
    System.out.println(TimePlaceholderUtils.getPlaceHolderTime("yyyy-MM-dd-1", date));
    System.out.println(TimePlaceholderUtils.getPlaceHolderTime("yyyy-MM-dd", date));`

What you expected to happen

fix the bug ,期望 $[yyyyMMdd-1] 只会少一天

How to reproduce

` TimeZone.setDefault(TimeZone.getTimeZone("America/Los_Angeles")); // 方法1: 使用 java.time 包 (推荐，Java 8+) ZonedDateTime laDateTime = ZonedDateTime.of( 2026, 3, 9, // 年, 月, 日 0, 10, 0, // 时, 分, 秒 0, // 纳秒 ZoneId.of("America/Los_Angeles") // 洛杉矶时区 );

    // 转换为 Date 对象
    Date date = Date.from(laDateTime.toInstant());
    //System.out.println(TimePlaceholderUtils.getPlaceHolderTime("$[week_last_day(yyyy-MM-dd,0) - 1]", date));
    System.out.println(TimePlaceholderUtils.getPlaceHolderTime("yyyy-MM-dd-1", date));
    System.out.println(TimePlaceholderUtils.getPlaceHolderTime("yyyy-MM-dd", date));`

Anything else

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Version

dev

Are you willing to submit PR?

• Yes I am willing to submit a PR!

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