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轻松使用此API创建唯一的通用标识符 此API将提供使用安全随机数生成器生成的UUID v4
通过这个API即时为您的项目生成令牌 生成唯一令牌
Generate cryptographic hashes and checksums of any text, sign payloads with a secret key, encode and decode data, and create random unique identifiers in one call. Nothing is stored.
Convert any date and time between world time zones with correct daylight saving handling, get the current time of any zone with its offset, or list every supported zone name. Daylight saving rules follow the standard worldwide zone database.
高效地检索任何纬度和经度的时区、协调世界时和夏令时信息
准确的时区数据，包括全球任何地点的UTC和夏令时偏移量
使用我们易于使用的API为您的在线需求生成独特且随机的用户名。非常适合应用程序和网站
通过我们的综合API研究域名年龄的细微差别，从而获得竞争优势进行明智决策
怀孕预产期和妊娠周数API 根据最后月经期、受孕、试管婴儿移植日或超声测量的胎儿头臀长计算预产期 ACOG重新定期规则、孕期、和分娩里程碑 确定性ISO 8601日期
轻松捕捉关键的时区重叠数据，以增强全球协作和调度准确性
无缝提取重要的时区重叠信息以改善跨区域协调和连接
Applies ACOG Committee Opinion 700 Table 1 to decide whether an ultrasound overrides LMP dating.
Due date from embryo transfer date. Day-3, day-5, day-6 and egg retrieval calculated separately.
Antenatal visit dates from the WHO 2016, NICE or ACOG published schedules, as calendar dates.
Gestational age at any given date, returned as a 29w2d label and as total days.
Ovulation estimate and 6-day fertile window from cycle length. Not contraceptive guidance.
Date and time edge cases: Feb 29, DST gaps, year 2038, leap seconds, and quarter-hour UTC offsets. Reproducible seeds, and every value explains what it breaks.
QA test fixtures and CI seed data with reproducible seeds, so pinned test runs return identical rows every time. 16 field types, each value explaining what it breaks.
Canonical injection test strings for checking your own escaping: SQL tautology, XSS, path traversal, template injection. Harmless probes, not working exploits. Reproducible seeds.
越界错误的边界值测试数据：int32和int64限制，最大长度字符串，空值。确定性种子，每个值解释它破坏了什么
Malformed and hostile string test data for input handling: control characters, null bytes, encoding edge cases. Reproducible seeds, and every value explains what it breaks.
Due date from last menstrual period using Naegele's rule, with 21-45 day cycle length correction.
Trimester boundaries, 24w0d viability, and four preterm and four term classes with their dates.
Dating from BPD, HC, AC and FL measurements in millimetres, using Hadlock 1984 equations.
Conception date from a last menstrual period or from a known due date, as ISO 8601 dates
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发现、连接和管理 API，只需一个账户、一个 API 密钥和一个统一的 SDK。探索我们庞大的目录，访问详细文档，并无缝测试端点。
