How do you schedule an interview across time zones?

Confirm the candidate’s time zone, list each interviewer’s working hours in their own zone and find where they overlap. Propose times inside that overlap, write them in the candidate’s zone with the city named, and send each interviewer an invite in theirs. For loops, place the narrowest overlap first.

Which time zone should an interview invite use?

The calendar invite converts itself for each attendee, so the real question is the email text. Write times in the candidate’s zone with a city, such as “2:00 pm London time,” and let each interviewer’s calendar show their own. Avoid abbreviations like EST or GMT, which are wrong for part of the year.

How do you schedule interviews across Outlook and Google Calendar?

Make sure the scheduler can see free/busy for everyone, then book from one place. Inside one company, IT sets up visibility. Across companies, shared calendars can lag by hours, so confirm external interviewers’ availability directly. Scheduling software that syncs both Google Calendar and Microsoft Outlook saves the double-checking.

What happens to scheduled interviews when the clocks change?

The invite stays correct: calendars store each event with its time zone and convert it for every attendee. The risk is in what people typed or assumed. In the weeks when the US and Europe are out of step, re-confirm the time in the candidate’s zone and check any times written in emails.

Can coordinators see interviewer availability without seeing meeting details?

Yes. Both calendars support free/busy-only sharing: “Can view when I’m busy” in Outlook and “See only free/busy (hide details)” in Google Calendar. Google Workspace admins can make free/busy the default for the organization; in Outlook, each calendar’s My Organization entry controls what colleagues see.

GuideInterview scheduling across time zones and calendars

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Contents

Short answer

To schedule interviews across time zones, store each person’s time zone and working hours, find the overlap before you propose anything, and show every time in the candidate’s zone with the city named. Across calendars, make free/busy visible to schedulers in Outlook and Google, book rooms as resources and reschedule from the tool that booked it.

Rules for interview scheduling across time zones

Interview scheduling across time zones fails in predictable ways: an invite that says 2:00 without a zone, an interviewer booked at 7:00 their time, a loop that slips an hour when the clocks change. Five rules cover the usual failures.

Show the candidate’s time zone, by city. Write “2:00 pm London time,” not “2 pm GMT” or a bare “2:00.” Abbreviations are ambiguous and change with daylight saving time. Put the candidate’s time first; each interviewer’s invite shows their own.

Schedule inside working hours on both sides. Store each interviewer’s working hours and treat them as limits unless they opt in to early or late slots. Ask candidates for their window too: someone with a day job may prefer evenings.

Keep time zones on people, not on events. Each interviewer’s profile should carry their zone and change when they travel or relocate. A zone typed into one invite is forgotten by the next.

Solve the narrowest overlap first. In a loop, the interviewer with the least overlap with the candidate sets the shape of the day. Place them first, then fit everyone else around them.

Re-check around clock changes. Countries change clocks on different dates, so the gap between two cities can shift by an hour for a few weeks. Re-confirm anything booked across a change.

Finding the overlap: a worked example

Say your candidate is in London and the loop needs interviewers in New York, San Francisco and Bengaluru, all working 9:00 to 17:00 local time. In January, each one-hour slot looks like this:

Slot in London (candidate)	New York	San Francisco	Bengaluru	Who can interview
09:00	04:00	01:00	14:30	Bengaluru
10:00	05:00	02:00	15:30	Bengaluru
11:00	06:00	03:00	16:30	Nobody: Bengaluru’s day ends mid-interview
13:00	08:00	05:00	18:30	Nobody
14:00	09:00	06:00	19:30	New York
15:00	10:00	07:00	20:30	New York
16:00	11:00	08:00	21:30	New York; San Francisco only with an early start
17:00	12:00	09:00	22:30	New York and San Francisco, but it’s after the candidate’s day

No hour works for everyone, which is normal for a global loop. Split it: Bengaluru in the London morning, New York in the afternoon, and San Francisco either at 16:00 London time with an interviewer who opts in to an 8:00 start, or on a second day. Rerun the table when clocks change: in summer, London moves an hour closer to Bengaluru, because India doesn’t change its clocks.

The daylight saving weeks

The United States moves its clocks on the second Sunday in March and the first Sunday in November. The UK and the EU change on the last Sunday in March and the last Sunday in October. So for two to three weeks each March, and for the week after the last Sunday in October, New York is four hours behind London instead of five. Arizona (outside the Navajo Nation) and Hawaii don’t observe daylight saving time at all.

Calendar invites convert correctly through all of this. The mistakes come from mental math and from times typed into emails: if your email says 15:00 London time and the invite says 14:00, the candidate will trust one of them, and you won’t know which.

Outlook vs Google Calendar: differences that matter for scheduling

Many interview loops touch both. Here’s how Microsoft and Google document the settings coordinators care about. Labels vary by app version, so check yours.

Setting	Microsoft Outlook (Microsoft 365)	Google Calendar (Google Workspace)
Sharing levels	Can view when I’m busy; Can view titles and locations; Can view all details; Can edit; Delegate	See only free/busy (hide details); See event details; two Make changes levels; Make changes and manage sharing
Organization default	Each calendar’s My Organization entry sets what colleagues see; admins can set custom levels with PowerShell	Admins set the internal default for primary calendars (no sharing, free/busy only or all information) and a separate external level
Working hours	Settings › Calendar › Work hours and location; the Scheduling Assistant shades time outside attendees’ working hours	Available on work or school accounts and set from Calendar on the web; an admin may turn it off
Rooms	Room mailboxes added to the invite; auto-accept by default, or delegate approval; booking window defaults to 180 days	Calendar resources created by admins and added to the event; can auto-accept invitations that don’t conflict
Delegates	Delegate can edit your calendar and share it with others	Make changes and manage sharing gives full control, including sharing
Extra time zones	Up to three in the latest Outlook for Microsoft 365; extra zones show in day and week views	Secondary and tertiary zones, a world clock, and separate start and end zones for one event

Calendar permission setup for Outlook and Google

Scheduling across calendars only works when the scheduler can see when people are busy. Set this up once, with IT, before the first loop.

Agree on free/busy visibility. Coordinators and any scheduling tool need at least free/busy for every interviewer. Free/busy alone is enough to schedule; titles and details are a privacy choice.

Turn on working hours. Ask interviewers to set working hours and keep them current. Outlook’s Scheduling Assistant shades time outside them, and Google uses them to help others schedule around you.

Make rooms bookable resources. Onsite loops need rooms that answer invites on their own: room mailboxes in Microsoft 365, calendar resources in Google Workspace. Check the booking window and auto-accept settings.

Keep delegate access narrow. Delegates can edit a calendar and share it. Give that to the coordinator who books for an executive interviewer, not to the whole recruiting team.

Approve scheduling tools centrally. Scheduling software connects to calendars through an integration your IT team approves. Ask which permissions it requests and why, and review it like any other app.

Scheduling across company calendars

Some interviewers sit outside your calendar system: an agency recruiter, a board member, a partner at a client firm, a team from a recent acquisition. Calendars can be shared across organizations, but they lag. Microsoft says a calendar shared with another Microsoft 365 organization syncs approximately every three hours, and that subscriptions in other services, such as Gmail, might not sync as often.

Treat a cross-company calendar as a hint, not a source of truth. For anything booked within a day or two, ask external interviewers to confirm directly. Send invites from your organizer’s calendar so updates and cancellations reach everyone, and put the video link in the invite itself.

Time-zone checklist for cross-region interviews

Candidate’s zone confirmed. Ask, don’t infer it from a phone number or address.

Times written with a city. Every email names the candidate’s city, such as London time.

Working hours respected. Nobody is booked outside their hours without opting in.

Narrowest overlap placed first. The hardest-to-schedule interviewer sets the shape of the loop.

Clock changes checked. Re-confirm anything booked across a change in either country.

One video link for every interview. Candidates shouldn’t juggle links across sessions and zones.

Breaks planned in the candidate’s day. They’re the one doing every interview.

Reminders in the reader’s zone. Each reminder shows the time where the recipient is.

Rescheduling and cancellations across time zones

Every change in a cross-region loop has to be re-solved against everyone’s hours. These habits keep it contained:

Reschedule from the tool that booked the interview, so one record stays true and the ATS doesn’t fall behind.
Update existing invites instead of sending new ones, so the link and history stay the same.
Replace an interviewer before moving the candidate. The candidate’s time should move last.
Re-check the candidate’s zone on every reschedule. If they’ve traveled, the old overlap no longer applies.
Cancel cleanly: release every hold and room, tell each interviewer and log who cancelled and why.

For declines, no-shows and ready-to-send emails, see how to schedule candidate interviews.

“Scheduling complex virtual onsite panels with multiple interviewers and different sessions has become significantly quicker, which has resulted in weekly hours of saved time.”

Sofia Ingargiola, Tatari

How ModernLoop handles time zones and calendars

ModernLoop does the overlap math for you. Interviewer profiles hold each person’s time zone and work hours, and ModernLoop syncs Google Calendar and Microsoft Outlook calendars, so availability comes from the calendars people already use. It juggles time zones, avoids scheduling over key meetings and identifies safe-to-schedule time blocks.

ModernLoop’s side-by-side calendar view: each interviewer’s time zone and weekly load limit sit above their calendar.

For loops, the scheduling algorithm uses candidate availability, interviewer availability and interviewer load to propose several complete schedules. Every interview gets one consistent Zoom or Google Meet link, and the candidate sees the whole day in the Candidate Portal. Coordinators can adjust any loop in a side-by-side calendar view with drag-and-drop editing, and when an interviewer can’t make it, ModernLoop helps find the best replacement. See Interview Scheduling, or how ModernLoop runs panel and onsite loops.

Sources

Product labels change between app versions; check yours. All sources checked October 22, 2026.