Asleep

What time is it there - and can you ping them?

Any city’s local time, its time zone, and a straight verdict before you send that message: PING, MAYBE or NOT NOW.

The working world right now

columns: UTC hours
PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07

Clocks

All countries
New YorkUTC−5PINGLos AngelesUTC−8PINGLondonUTC+0NOT NOWBerlinUTC+1NOT NOWDubaiUTC+4NOT NOWMumbaiUTC+5:30NOT NOWSingaporeUTC+8NOT NOWTokyoUTC+9NOT NOWSydneyUTC+11MAYBESão PauloUTC−3MAYBEChicagoUTC−6PINGHong KongUTC+8NOT NOW

Time zone converter

All zones
PST → ISTEST → ISTCET → ISTEST → PSTGMT → ESTUTC → ESTCST → ISTEST → CETPST → ESTAEST → PSTJST → ESTIST → EST

Time differences

All pairs
New York – London+5hSan Francisco – Tokyo+17hLondon – Sydney+11hNew York – Frankfurt+6hLos Angeles – London+8hLondon – Mumbai+5:30h

Tools for teams across time zones

Team pageWho's working, asleep or off for a holiday right now, and the best time to meet this week. One link, no sign-up.Meeting finderRanked slots for every city on the invite that skip weekends, public holidays and daylight saving traps.Share a timeOne link that shows the meeting in everyone's own time zone, with add-to-calendar buttons.

Countries

All countries
ChinaUnited StatesIndiaCanadaMexicoIndonesiaBrazilJapanRussiaPakistanUnited KingdomTürkiyeNigeriaAustraliaFranceGermanyItalyPhilippinesSouth KoreaVietnamIraqSpainIranSouth Africa

Guides

All guides
Slack after hours: is it rude to message teammates?Yes, unless they are on-call, they asked, or you scheduled send. Overtime lights are scenery, not consent - in Tokyo, Berlin, and New York alike.Best time to message the UK from the USAim for London 09:30–17:30. From New York that is morning; from California that is before you sleep. Watch 8–29 March 2026, when the offset is four hours instead of five.What time do people start work in Tokyo?Nine o’clock on paper, trains earlier, overtime later. The pingable window is still 09:00–18:00 JST unless you are on a rota - and JST never springs forward.Best time to message Japan from the USJST does not spring forward. Your Tuesday evening in California is already Wednesday morning in Tokyo - and after 21:00 there, a Slack ping reads like a fire alarm.

How Asleep decides

What does PING, MAYBE and NOT NOW mean?

PING is 09:00–18:00 local time on a weekday that isn’t a public holiday. NOT NOW is 21:00–07:00 local. Everything else - early mornings, evenings, weekends and holidays - is MAYBE.

Where does the time zone data come from?

Offsets and daylight saving rules come from the IANA time zone database built into your browser and our server. City data is from GeoNames; public holidays are computed for over 200 countries.

Which cities are covered?

Every city over 15,000 people - more than 33,000 places in over 200 countries - plus aliases, so “NYC” and “Bombay” work too.