参考资料库
日期时间转换速查表
timestamp、ISO 日期、时区、时长和日历提醒。
Unix seconds
参考： Common API timestamp shape in seconds.
1719763200ISO instant
参考： Portable UTC timestamp for logs and payloads.
2026-06-30T12:00:00ZISO week
参考： Week-number notation for planning and reporting.
2026-W27ICS date
参考： Calendar event timestamp shape.
DTSTART:20260630T120000Z