Interviewing candidates in different time zones: a guide for hiring teams

Less than people assume. Take a working day of 9am to 5pm on both sides. Every hour of time difference removes an hour of shared working time, so two offices eight hours apart share none at all. If both sides will stretch to 8am to 7pm for an interview, the window is eleven hours and the overlap is eleven minus the gap.

Swipe the table sideways to see every column.

Two things follow. Past about six hours apart, every live interview is booked into a window of an hour or two, and one reschedule pushes it back by days, which is how scheduling becomes the largest delay in a hire, as time to hire describes. And past eight hours, somebody is always paying for the gap with their evening or their early morning.

Because the gap between two cities is not fixed. Clocks change on different dates in different places, and for a few weeks a year the usual difference is wrong by an hour.

• The United States starts daylight saving time on the second Sunday of March and ends it on the first Sunday of November, according to NIST. Hawaii and most of Arizona do not observe it.
• The European Union starts summer time on the last Sunday of March and ends it on the last Sunday of October, under Directive 2000/84/EC.

In 2026 the EU changes back on 25 October and the US on 1 November, so for that week New York and Berlin are five hours apart instead of six. In spring 2027 the US moves on 14 March and the EU on 28 March, a two-week mismatch. An interview booked by converting times in your head during those weeks will be an hour out for somebody. Many countries do not change their clocks at all, which moves the gap to them twice a year.

The fix is mechanical. Send calendar invitations that carry the time zone, write the time in the candidate's zone in the email as well ("10:00 your time, Berlin"), and confirm the day before during any changeover week.

Rarely, and the unfairness is systematic rather than occasional. When the only shared hour is 10pm for the candidate, every applicant from that region interviews at 10pm, after a full working day, while local applicants interview at 11am. Nobody decided to rank the region lower; the calendar did it for them.

It gets worse where your process is live from the first round, because a first round is where you speak to the most people and know the least about each. A late-night slot also costs more to rearrange, so a candidate who cannot make it loses days, not hours.

Practical rules for any live round:

1. Set a floor and a ceiling in the candidate's time, for example nothing before 8am or after 8pm local, and hold interviewers to the same.
2. Share the inconvenience. If somebody has to be up early, it should not always be the candidate. Interviewers can take the early or late slot too.
3. Offer at least three slots across two days, so a candidate is choosing, not accepting the only option.
4. Do not read anything into a request to reschedule across a large gap.
5. Ask everyone the same questions regardless of when the call happened, so the tired hour does not also get a different interview. The reasoning is in reducing bias in candidate screening.

An asynchronous interview is one the candidate takes on their own schedule, with no interviewer booked at the same time. The team reviews it later, in its own working hours. That is what makes it the natural first round across time zones: the gap stops mattering, because nobody needs to share an hour.

There are three common kinds, and they produce different evidence.

Swipe the table sideways to see every column.

One-way video is the established kind. Willo, for example, says candidates "can complete their assessment in their own time, on any device", and HireVue's candidate FAQ says "most video-based assessments include between five and eight questions". Career1's one-way video alternative keeps the any-hour part and adds a listener: the AI interviewer asks about the candidate's own experience and follows up when an answer is thin.

Fairer on timing, and less popular than employers assume. In Greenhouse's 2026 survey of 2,950 candidates, the top reason candidates gave for withdrawing from a hiring process was "pre-recorded video interviews scored by AI with no human present (33%)". Greenhouse sells hiring software, so weigh it as a vendor's survey, but the lesson holds: an asynchronous round needs to tell candidates who reviews it.

To make one fair across regions:

• Give a window, not a deadline hour. A week covers weekends everywhere, including countries whose weekend falls on different days.
• Say plainly how long it takes and what happens next, including that a person reviews every result and makes every decision.
• Make it work on a phone with an ordinary connection. Not every candidate has a quiet room and fast broadband, and a first round should not screen for them.
• Say which language it is in, before the candidate starts.
• Check what happens if the connection drops. HireVue's FAQ tells candidates that "if you do lose connection in the middle of your assessment, you'll be able to pick up where you left off"; ask every vendor the equivalent.
• Review quickly. Asynchronous for the candidate must not mean slow for the team. A first round finished on Monday and read the following week has saved the candidate an evening and cost them a fortnight.

The conversations where both sides are deciding, and anything that needs back-and-forth.

• The hiring manager's round. The candidate is judging the person they would work for, and that needs a real conversation.
• Collaborative exercises, such as working through a problem together or discussing a work sample the candidate has done.
• Questions about the job itself: pay, hours, how the team works. Candidates ask better questions live, and their questions tell you a lot.
• The final round and the offer conversation.

And be honest about overlap in the advert. If the role needs four hours a day shared with a team in another zone, say so and name the hours. An asynchronous first round must not hide a live requirement that will end the process at the offer stage, or three months after it.

It fits the first round. With Career1's AI recruiter, applying to a job starts the interview, the link is valid for seven days, and the candidate takes it whenever suits their day, on a laptop or a phone, in the browser with nothing to install. It is spoken and takes about eight minutes, with questions from the role and the candidate's own resume and a follow-up when an answer is thin. Your team reads the ranked shortlist in its own working hours, with a report, the transcript and the recording for each applicant. There is a sample interview report to see what arrives. The scores are decision support: your team decides, and Career1 rejects nobody.

Where it does not fit:

• Interviews in languages other than English. Career1's interview is English only at the time of writing, which rules it out for many global roles.
• Candidates without a working microphone and a steady connection for about eight minutes. A written first round, or a phone call, may suit them better.
• Scheduling your live rounds. Career1 does not do the time-zone arithmetic above for you; the rules in this article still apply.
• Anything beyond hiring. Contracts, payroll and employment law in the candidate's country are outside what Career1 does.

The free plan covers two interviews a month with no card, and the paid plans are on the pricing page. How to judge any AI interviewer, this one included, is in how to evaluate an AI interview platform.

Every page below was opened and read on 29 September 2026. Career1 is not affiliated with any organisation named here.

• NIST, daylight saving time in the United States: nist.gov.
• Directive 2000/84/EC on summer-time arrangements: eur-lex.europa.eu.
• Greenhouse, "AI interviews in hiring: What candidates actually want", 29 April 2026: greenhouse.com.
• Willo homepage: willo.video.
• HireVue candidate FAQ: hirevue.com/candidates/faq.

The overlap tables are arithmetic on the working hours stated above, not measurements. Change the hours and redo the sum.