We hired someone eight zones away and nobody checked the overlap

The hiring process went well. Strong interviews, good references, the offer was accepted inside a week. Everyone was pleased.

Nobody, at any point, opened a clock and asked how many hours a day this person would actually be able to talk to the rest of the team.

The answer turned out to be about ninety minutes.

The number you should have run first

It takes a minute. Take the new hire's normal working day, take the team's, and look at where they intersect.

An eight-hour gap between two nine-to-five days leaves one hour of overlap. Nine hours leaves none at all. That is not a communication style problem or an onboarding problem — it is arithmetic, and it was knowable before the offer went out.

Some real shapes, with an ordinary waking window on both sides:

• New York ↔ London — a genuinely comfortable overlap; most of the London afternoon meets most of the New York morning.
• Berlin ↔ Singapore — workable, concentrated in the European morning.
• New York ↔ Bengaluru — roughly four and a half hours, and both ends of it are unsociable: early US morning, late Indian evening.
• London ↔ Sydney — the hard one. Whatever you find sits at the very edge of somebody's day.

A narrow overlap is not disqualifying

Plenty of teams work like this successfully. But it only works if it is designed for, deliberately, before the person starts — not discovered in week three when they have been sitting on a blocked task for two days waiting for an answer.

What actually makes it work:

Write things down by default. If the overlap is ninety minutes, anything that requires a synchronous conversation to unblock will cost a day. Decisions, context and rationale have to exist in text, or the remote hire spends most of their week waiting.

Spend the overlap on the things only humans-in-real-time can do. Unblocking, judgement calls, relationship. Not status updates — those belong in writing, and using the shared hour for them is the most common way teams waste it.

Give them a real decision boundary. Someone eight zones out who has to ask permission is idle for half of every day. The scope of what they can decide alone matters more than it would for a colleague down the hall.

Name who covers the gap. One person on the main team who is genuinely responsible for answering during the overlap, so questions do not evaporate.

Say it out loud in the interview

The honest version helps both sides:

"Our overlap will be about two hours a day, roughly 8–10am your time. Most coordination happens in writing. Does that work for how you like to operate?"

Some candidates want exactly that. Others will tell you it would make them miserable, which is far cheaper to learn in an interview than in month two.

And check it again twice a year

The overlap is not fixed. If one country observes daylight saving and the other does not — India does not, most of the US does — the shared window moves by an hour twice a year, and it can move in the direction that shortens it. See IST to EST.

Related: Somebody on this team is always taking the call at 6am · The handoff window nobody can agree on

Figures on this page are computed from the IANA time zone database. Last generated 2026-08-18.