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    TIME DIFFERENCE

    Chicago Perth

    +13hPerth is 13h ahead of Chicago right now.
    Chicago
    --:--
    Perth
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    Live — updates every second
    WORKING-HOUR OVERLAP

    Working-hour overlap

    shared 9–5 hours
    Find a time with everyoneAdd a third city Tracks assume a 9–5 working day in each city.
    SIDE BY SIDE
    ChicagoPerth
    Time zoneCentral Daylight TimeAustralian Western Standard Time
    IANA identifierAmerica/ChicagoAustralia/Perth
    AbbreviationCDTGMT+8
    UTC offsetUTC-5UTC+8
    Daylight savingObservedNot observed
    Current time
    QUESTIONS
    01

    How many hours is Perth ahead of Chicago?

    Perth is 13 hours ahead of Chicago. That's calculated from each city's current UTC offset (UTC-5 for Chicago, UTC+8 for Perth).

    02

    Does the time difference between Chicago and Perth change during the year?

    It can. Chicago observes daylight saving time, so the gap shifts by an hour when clocks change. The live clocks above always reflect the current, correct difference.

    03

    What's the best time to schedule a meeting between Chicago and Perth?

    There's no window where both Chicago and Perth are in standard 9-to-5 hours at the same time, so a live call means one side joins early or late. Converge can find the least-bad slot from everyone's real availability.

    MORE TIME DIFFERENCES

    Meeting across Chicago and Perth?

    Skip the timezone math — share one link and Converge finds the time that works for everyone. Free.