Methodology

The editorial policy of Kalinga Times is to check every offset and daylight-saving date against the IANA time zone database, state the source and check date on each page, and show the calculation behind every tool, so a reader can verify a conversion without trusting the site blindly.

Sources we use

• IANA time zone database (tz database), the standard source most operating systems, browsers and programming languages use for time zone and daylight-saving rules.
• Official notices from governments or national standards bodies when a country changes its time zone or daylight-saving rules.
• For India: Indian Standard Time is UTC+5:30, kept by the CSIR–National Physical Laboratory, New Delhi; India has not observed daylight saving time since 1945–1945 (the last wartime period), so the UTC+5:30 offset is fixed year-round.
• For the United States and United Kingdom: daylight-saving start/end dates follow the current law in each country (in the US, the second Sunday of March to the first Sunday of November under the Energy Policy Act of 2005; in the UK/EU, the last Sunday of March to the last Sunday of October).

What the tools calculate

The converter takes a date and time in one zone, applies the UTC offset that zone uses on that specific date (not just today’s offset — the date matters for zones that observe daylight saving), and shows the result in the other zone. For dates near a clock change, the page shows which offset applies on each side of the change, since the two zones do not always switch on the same calendar day.

Time zone pairs currently covered

Each row below is a published converter page, with the UTC offset each zone uses (IST never changes; the other side shows both its standard and daylight-saving offset where it observes one).

The site’s time zone converter and meeting planner tools also support comparing any two cities by date, not limited to the pairs listed above.

How a correction is checked and published

1. A reader reports a page, offset or date that looks wrong, or an internal review (at least every 180 days per page) flags one.
2. The reported offset and date are checked against the current IANA tz database release for both zones involved.
3. If the government notice or tz database has changed since the page was last checked, the page is updated and the check date shown on that page is refreshed.
4. If the report turns out to be a misunderstanding (for example, confusing a zone’s standard offset with its daylight-saving offset) rather than an error, the page is left as is and the reader is told which offset applies and why.

Review

Every page is reviewed at least every 180 days, and sooner when a reader reports an error or a source changes. If a converter or offset date looks wrong to you, contact us with the page link and we will check it against the source above.

What this site does not do

Kalinga Times converts clock time between zones; it does not track real-time flight status, publish news, or give legal advice about contracts that reference a time zone. For legal or contractual deadlines tied to a time zone, confirm the exact wording with the relevant authority or counsel rather than relying on a converter alone.

FAQ

Why does IST to EST change during the year?

India does not change its clocks, but the US eastern zone switches between EST (UTC−5) and EDT (UTC−4), so the gap is 10 h 30 min or 9 h 30 min depending on the date.

How often are pages reviewed?

At least every 180 days, or sooner after a report or a rule change.

Does India observe daylight saving time?

No. India has kept a fixed UTC+5:30 offset year-round since the mid-1940s, so only the other zone’s offset changes across a DST transition.

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Updated 27 October 2026 · Kalinga Times editorial team