Time Difference: Lyon vs Tokyo

Lyon and Tokyo are in the same time zone offset, so there is no time difference between them.

There are 9 overlapping business hours (9 AM–6 PM) between Lyon and Tokyo. Scheduling during those hours ensures both parties are in their working day.

Lyon and Tokyo share the same UTC offset (GMT+2), so their workdays are completely synchronized — no conversion needed, identical real-time availability, and deadline alignment is automatic.

Lyon observes GMT+2 (Europe/Paris). A standard 9:00 AM–6:00 PM workday in Lyon maps to specific UTC hours — use UTC-anchored deadlines when coordinating with Lyon-based teammates to avoid confusion from local clock changes.

Tokyo observes GMT+9 (Asia/Tokyo). A standard 9:00 AM–6:00 PM workday in Tokyo maps to specific UTC hours — use UTC-anchored deadlines when coordinating with Tokyo-based teammates to avoid confusion from local clock changes.

If {cityA} and {cityB} follow different DST schedules — common in North America–Europe, Southern Hemisphere, or no-DST pairings — the time difference shifts by 1 hour during each transition. The 1–3 weeks between the two cities' clock-change dates create a 'gap window' that frequently catches teams off guard. The difference displayed here is always live and accounts for current DST status.

The best time to call Tokyo from Lyon is during the 9-hour business-hours overlap window, when both cities are within their standard working day (9 AM–6 PM).

When it is midnight (00:00) in Lyon, it is 12 AM in Tokyo.

No — Lyon and Tokyo share the same UTC offset, so they are always on the same calendar date.

Lyon observes Europe/Paris (GMT+2). For async-first teams, the most reliable approach is anchoring shared deadlines in UTC rather than any local time, and defining each member's 'availability window' — typically 9:00 AM–6:00 PM Europe/Paris for Lyon. This eliminates confusion when DST transitions shift local clocks seasonally.

Tokyo observes Asia/Tokyo (GMT+9). For async-first teams, the most reliable approach is anchoring shared deadlines in UTC rather than any local time, and defining each member's 'availability window' — typically 9:00 AM–6:00 PM Asia/Tokyo for Tokyo. This eliminates confusion when DST transitions shift local clocks seasonally.

Yes — with 9 hours of overlapping business hours, Lyon and Tokyo teams can hold real-time standups and synchronous collaboration daily during that window.