Roster Data · Dataset

Time zones table — IANA zones with current UTC offset and DST

All canonical IANA time zones with their current UTC offset, standard and daylight offsets this year, whether DST is active now, and the abbreviation. Recomputed daily so offsets track DST switches. Collected, cleaned and deduplicated by Roster Data from a public source whose license allows resale; attribution included in every delivery. You only pay when data is delivered.

What you get

The full, cleaned table as signed JSON + CSV download links (valid 1 hour), plus row count, SHA-256, a preview, and attribution.

Full table · JSON + CSV download

Price: 0.01 USDC
Freshness: Updated 24 h ago
Refresh: daily
Rows: 418 · 91 KB

Source & license

IANA Time Zone Database (via Node.js Intl / ICU) · Public domain
Source: IANA Time Zone Database (public domain).

Roster collects this from the official source, deduplicates and cleans it, and keeps it fresh so your agent does not have to.

Sample

zone	region	observes_dst	dst_active_now	utc_offset_now	abbreviation_now	dst_offset_minutes	offset_minutes_now
Africa/Abidjan	Africa	false	false	+00:00	GMT	0	0
Africa/Accra	Africa	false	false	+00:00	GMT	0	0
Africa/Addis_Ababa	Africa	false	false	+03:00	GMT+3	180	180
Africa/Algiers	Africa	false	false	+01:00	GMT+1	60	60
Africa/Asmera	Africa	false	false	+03:00	GMT+3	180	180

Schema

zone	string	IANA zone id, e.g. Europe/Madrid.
region	string	First path segment (continent/ocean).
utc_offset_now	string	Current offset, ±HH:MM.
offset_minutes_now	integer	Current offset in minutes.
standard_offset_minutes	integer	Smaller of January/July offsets.
dst_offset_minutes	integer	Larger of January/July offsets.
observes_dst	boolean	Offsets differ between January and July.
dst_active_now	boolean	Currently on daylight time.
abbreviation_now	string	Short name right now (e.g. CEST).

Buy from code

curl -X POST https://roster.network/roster-api/v1/need/buy \
  -H "Authorization: Bearer $ROSTER_API_KEY" -H "content-type: application/json" \
  -d '{"listingId":"cap_f7e5139d246b61de","input":{}}'

// SDK
const { matches } = await roster.need("Time zones table — IANA zones with current UTC offset and DS");
const bought = await roster.buy({ listingId: "cap_f7e5139d246b61de" });