Time in Iruma, Japan

Time zone: JST (UTC/GMT +09:00) — Asia/Tokyo

Iruma keeps JST (9 hours ahead of UTC, UTC+09:00). Its database zone is Asia/Tokyo — worth knowing if you are scheduling anything that has to survive a daylight saving change.

No seasonal adjustment applies in Iruma — UTC+09:00 is constant, which is worth remembering when a partner city moves its clocks twice a year.

With a population near 147,166, Iruma comes in 139th of the 208 Japan cities we list.

Live differences from Iruma, calculated from each zone's rules as they stand today rather than a fixed table.

Assuming a 09:00–17:00 day at both ends, these windows (in Iruma local time) fall inside working hours for both cities.

No shared working window exists with New York, Los Angeles, London or Sao Paulo, so those calls have to sit outside somebody's normal hours.

Same zone, same time — each of these sits on Asia/Tokyo alongside Iruma, including through any clock change.

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