Unverified50% confidenceFactExact time
现代日历系统大多基于 iCalendar（RFC 5545）标准格式存储事件数据，跨平台同步依赖 CalDAV 协议
1
Sources
50%
Confidence
Long-term
Relevance
8/23/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedGoogle Calendar 和 Apple Calendar 等主流日历应用基于 CalDAV/CardDAV 协议构建，核心架构围绕个人事件管理设计67% similarUnverifiedA robust scheduling system should store all timestamps in UTC and perform localized conversion at the presentation layer based on the user's current context.62% similarUnverifiedThe IANA time zone database (also known as the Olson database) is maintained by a volunteer community and contains historical change records for more than 600 time zones worldwide.59% similar
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