ISO 8601 in a blog post?

Fine in a sidebar for machines. Most readers want a city name. 2026-08-20T13:00:00Z is unambiguous and unfriendly.

Should I localise the month name?

Yes for the page locale. Keep the IANA id in ASCII. Dates in Danish and English on NowZones follow that split.

What does NowZones put in titles?

City-first titles like “Time in Tokyo,” not the IANA id. The id lives in the facts block so humans and crawlers both get an answer.

How to write times for readers

A time without a place is a riddle. A place without a date is a riddle in March. Writing for the web means assuming the screenshot will outlive the live clock.

Last updated 2026-08-20 · Written by the NowZones publisher in Denmark. Offsets and DST examples use the IANA Time Zone Database via the same libraries as the city clocks. This is editorial explanation, not legal, medical, or aviation advice.

A stable pattern

Use: 09:00 on Thursday 20 August 2026 in New York (America/New_York, UTC−04:00 while EDT is in force). That is long. It survives forwarding.

Shorter for UI: 09:00 in New York. Put the IANA id and offset in a facts box, the way city pages on this site do. Shorter still for a button: New York 09:00 — only when the date is already on screen.

Prefer the 24-hour clock in international copy. If you use am/pm, write it out (9:00 am) and still name the city. Do not use a running 12-hour clock without a meridian in a table of many rows.

What not to write

“Tomorrow at 9.” Whose tomorrow, after the date line? “9 EST.” Winter or summer? “9 GMT” in July in London. “Midnight” without saying whether you mean 00:00 at the start or end of the date.

Relative phrases (“in three hours”) in an email that will be read later. Absolute civil time plus city survives; relative time does not.

Flag emojis as a substitute for a zone. A flag is a country; a country is not a clock. The US flag is several IANA ids.

Link a clock when you can

If the reader might need to check DST, link the city page. If they need a pair, link a curated difference. If they need an arbitrary combo, link the converter with the instruction to set both cities and the date.

We keep difference URLs to a curated allowlist so a blog can link a stable, unique page rather than a generated doorway. That is a publishing choice as well as an SEO one.

Try the tools

Frequently asked questions

ISO 8601 in a blog post?: Fine in a sidebar for machines. Most readers want a city name. 2026-08-20T13:00:00Z is unambiguous and unfriendly.
Should I localise the month name?: Yes for the page locale. Keep the IANA id in ASCII. Dates in Danish and English on NowZones follow that split.
What does NowZones put in titles?: City-first titles like “Time in Tokyo,” not the IANA id. The id lives in the facts block so humans and crawlers both get an answer.