What time is it in Tokyo when it's noon in London?

When it's 12:00 PM in London, it's 9:00 PM in Tokyo.

How many hours apart are London and Tokyo?

London and Tokyo are separated by the current UTC-offset difference between their time zones, adjusted for daylight saving time on each side.

London uses Europe/London (the IANA time zone database identifier).

City time converter

Convert the current time in London, UK to Tokyo, Japan. Daylight-saving adjustments applied automatically.

Common times in London and their equivalents in Tokyo:

Table computed using a fixed reference date for stability. Use the full converter for any date and time.

Country: UK
Zone: Europe/London

Country: Japan
Zone: Asia/Tokyo

What time is it in Tokyo when it's noon in London?: When it's 12:00 PM in London, it's 9:00 PM in Tokyo.
How many hours apart are London and Tokyo?: London and Tokyo are separated by the current UTC-offset difference between their time zones, adjusted for daylight saving time on each side.
What time zone does London use?: London uses Europe/London (the IANA time zone database identifier).