BizCal API
Holiday-aware business day calculations for 15 counries
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Robert Pringle

BizCal API - Holiday-aware business day calculations for 15 counries

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Stop building date logic from scratch. BizCal API gives you production-ready business calendar endpoints so you can ship features faster. Handling business day calculations, SLA deadlines, holiday-aware scheduling, fiscal years, and working hours across 15 countries is hard. Timezone math, regional holiday variations, DST transitions — BizCal handles it al

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Robert Pringle
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Hey PH! 👋 I built BizCal API because I kept running into the same problem: date math involving business hours, public holidays, or multiple countries is deceptively hard to get right. The specific pain points that motivated this: - "24 business hours from Friday 3pm" is not Saturday 3pm -- it's Wednesday 3pm after crossing a weekend - US federal holidays differ from California and Texas holidays (sub-national matters for payroll) - Germany alone has 16 states with different holiday calendars -- Bavaria has 4 more public holidays than Berlin - DST transitions silently break naive datetime arithmetic BizCal handles all of it: 22 endpoints across business days, working hours, and holiday lookups for 15 countries with ~200 regional calendars. Free tier (50 req/day) covers US, UK, and AU -- enough to build and test. Happy to answer any questions!