World Time Board - Time Zones
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About this app
If you work across countries, or your family and friends live abroad, you end up doing the same sum over and over: "what time is it there right now?" World Time Board removes that step. Add your cities once and their current times sit side by side on one screen — and a single slider shows a meeting time in everyone's local clock.
■ Time Board — the current time at a glance
· Every city you added, all on one screen
· A 24-cell bar per city colouring work hours, early morning, evening and night
· Zone abbreviation (KST, EST …), a DST badge and an upcoming-transition notice
· Sunrise and sunset times, 12- or 24-hour clock, optional seconds
· Drag to reorder, or sort by offset, name or continent
· City nicknames, notes, groups and per-city working hours
■ Meeting planner — find a time that works for everyone
· Pick a date, drag the slider, and read every city's local time and how well it fits
· Best-time finder scans all 48 slots of the day and picks the one that suits everyone
· City × 24-hour overlap heat map — tap a column to jump to that hour
· Working hours, weekends and public holidays are taken into account
· Copy as text, share as an image card, or export to your calendar (.ics)
■ Convert — any time, any city
· Take any moment in any city and read it in all the others
■ Map — see where it is day and night right now
· A live day/night terminator on a world map, with pins for your cities
■ City alarms
· Alarms that ring at the other city's local time and follow its DST changes
■ Fully offline
Every calculation uses only your device clock and the operating system's IANA time zone data. No server, no sign-in, no account. It works in flight mode. Your city list and settings stay on the device and are never uploaded.
■ About ads
The core is always free: reading the time, adding and removing cities, and the meeting slider are never behind an ad. Rewarded ads only open extras — 24-hour banner removal, extra city and group slots, extra best-time and calendar uses, clock skins, watermark removal, full time-zone search and holiday data — and those extras still unlock when no ad is available or you are offline.
■ Languages
English · 한국어 · 日本語 · 中文 · Español · Français · Deutsch · Português · Bahasa Indonesia · Tiếng Việt
Starts with a catalogue of 102 cities and can search every IANA time zone. Holiday data is an offline reference set — always confirm against an official calendar.
Contact: tk32189@naver.com
■ Time Board — the current time at a glance
· Every city you added, all on one screen
· A 24-cell bar per city colouring work hours, early morning, evening and night
· Zone abbreviation (KST, EST …), a DST badge and an upcoming-transition notice
· Sunrise and sunset times, 12- or 24-hour clock, optional seconds
· Drag to reorder, or sort by offset, name or continent
· City nicknames, notes, groups and per-city working hours
■ Meeting planner — find a time that works for everyone
· Pick a date, drag the slider, and read every city's local time and how well it fits
· Best-time finder scans all 48 slots of the day and picks the one that suits everyone
· City × 24-hour overlap heat map — tap a column to jump to that hour
· Working hours, weekends and public holidays are taken into account
· Copy as text, share as an image card, or export to your calendar (.ics)
■ Convert — any time, any city
· Take any moment in any city and read it in all the others
■ Map — see where it is day and night right now
· A live day/night terminator on a world map, with pins for your cities
■ City alarms
· Alarms that ring at the other city's local time and follow its DST changes
■ Fully offline
Every calculation uses only your device clock and the operating system's IANA time zone data. No server, no sign-in, no account. It works in flight mode. Your city list and settings stay on the device and are never uploaded.
■ About ads
The core is always free: reading the time, adding and removing cities, and the meeting slider are never behind an ad. Rewarded ads only open extras — 24-hour banner removal, extra city and group slots, extra best-time and calendar uses, clock skins, watermark removal, full time-zone search and holiday data — and those extras still unlock when no ad is available or you are offline.
■ Languages
English · 한국어 · 日本語 · 中文 · Español · Français · Deutsch · Português · Bahasa Indonesia · Tiếng Việt
Starts with a catalogue of 102 cities and can search every IANA time zone. Holiday data is an offline reference set — always confirm against an official calendar.
Contact: tk32189@naver.com
Every city's time on one screen. Zone converter and meeting planner, offline.
Updated on
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What’s new
1.1.0 — a big update
· New app icon and splash screen
· The planner takes a date; times crossing a daylight-saving boundary are finally correct
· Best-time finder across all 48 slots of the day
· City × 24-hour overlap heat map, meeting-length picker
· Share as an image card, export to calendar (.ics)
· New Convert tab and a live day/night Map tab
· City alarms, pinned home city, nicknames and groups
· Only the clock text repaints: less battery
· 102 cities, clock skins, ten languages
· New app icon and splash screen
· The planner takes a date; times crossing a daylight-saving boundary are finally correct
· Best-time finder across all 48 slots of the day
· City × 24-hour overlap heat map, meeting-length picker
· Share as an image card, export to calendar (.ics)
· New Convert tab and a live day/night Map tab
· City alarms, pinned home city, nicknames and groups
· Only the clock text repaints: less battery
· 102 cities, clock skins, ten languages
