Convert Gregorian <-> Hebrew date
API · /hebcal-api
Jewish Calendar API
The Jewish calendar as an API — powered by Hebcal. Convert any date between the Gregorian and Hebrew calendars (with the formatted Hebrew date and the Jewish events falling on that day), list the Jewish holidays of any year — major and minor festivals, Rosh Chodesh and special Shabbatot — each with its English and Hebrew name, date and category, and get this week's Shabbat candle-lighting time, Torah portion (parashah) and Havdalah time for any location by GeoNames id or coordinates. From Rosh Hashanah and Yom Kippur to Passover, Shavuot and Hanukkah, with Hebrew dates rendered in Hebrew script, it is ideal for calendar, scheduling, event, religious and cultural applications. A Jewish-calendar resource — distinct from secular public-holiday and Islamic prayer-time APIs. Open data from Hebcal (CC-BY 4.0 / GPL).
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 206 ms
- Server probes · 24h
- Subscribers
- 4,457
- active
- Total calls
- 12
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 2,900 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 2,900 calls/month
- 2 req/sec
- Convert + holidays + Shabbat
- No credit card
Starter
€7.45 /month
- 57,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 57k calls/month
- 8 req/sec
- Hebrew <-> Gregorian both ways
- Email support
Pro
€23.30 /month
- 265,000 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 265k calls/month
- 20 req/sec
- Calendar & scheduling apps
- Priority support
Mega
€60.80 /month
- 930,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 930k calls/month
- 50 req/sec
- Calendar platform
- Dedicated SLA
Built by
Related APIs
Other APIs with overlapping tags.
Public Holidays API
Public holidays for 120+ countries — by year, the next upcoming holidays for a country, and the list of supported countries. Each holiday includes the date, English and local name, scope (national/regional) and type. Ideal for HR, scheduling and booking systems.
api.oanor.com/holidays-api
iCalendar API
Build a valid RFC 5545 iCalendar (.ics) event from simple parameters — and get ready-to-use "add to calendar" links for Google, Outlook, Office 365 and Yahoo. Pass a title, start and end (ISO 8601 or unix timestamps, in UTC) — or a duration in minutes, or an all-day flag — plus optional location, description, URL, organizer, an RRULE recurrence (e.g. FREQ=WEEKLY) and a reminder (a VALARM N minutes before). The service returns the fully-formed .ics text with correct escaping and 75-octet line folding, a base64 data: URI you can drop straight into a download link, and the four calendar deep-links. A second endpoint parses raw .ics text back into structured JSON events. Everything is computed locally with no network calls, so it is fast and deterministic. Built for booking and scheduling flows, event pages, email "add to calendar" buttons, reminders and no-code automations. A calendar-event builder — distinct from date/time math (datetime), public-holiday data (holidays) and the Jewish calendar (hebcal). No upstream key, no cache.
api.oanor.com/ical-api
Prayer Times & Islamic Calendar API
Islamic prayer times, the Hijri calendar and the Qibla direction as an API. Get the five daily prayer times — Fajr, Dhuhr, Asr, Maghrib and Isha, plus sunrise, sunset, Imsak and midnight — for any coordinate and date, calculated with your choice of method (Muslim World League, ISNA, Umm al-Qura, Egyptian, and many more), alongside the matching Hijri date; convert any date between the Gregorian and Hijri (Islamic lunar) calendars in either direction; and get the exact Qibla direction — the compass bearing and great-circle distance from any location to the Kaaba in Mecca. Prayer times and calendar conversion are powered by the Aladhan service; the Qibla is computed directly. Ideal for Muslim prayer and lifestyle apps, mosque and community sites, Ramadan tools and calendars, and any app that needs accurate prayer times or Hijri dates. Open data.
api.oanor.com/prayer-api
On This Day API
Historical events, notable births and deaths, and holidays for any calendar date — "on this day in history" — relayed live from Wikipedia. Get today's curated highlights, or pass any date (e.g. 07-20 → Apollo 11 Moon landing among the events) to retrieve notable events, births, deaths, holidays/observances, or the editor-selected highlights. Every entry carries the year, a one-line description and a link to the relevant Wikipedia article. Ideal for "today in history" widgets, daily-content apps, trivia, newsletters and educational tools.
api.oanor.com/onthisday-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Jewish Calendar API?
What's the rate limit for Jewish Calendar API?
How much does Jewish Calendar API cost?
Can I cancel my subscription anytime?
Is Jewish Calendar API GDPR-compliant?
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/hebcal-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/hebcal-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/hebcal-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
"https://api.oanor.com/hebcal-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())
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