WhatTimeHere guides
Understand world time
Plain-language explanations for time zones, UTC offsets, daylight saving and planning across cities.
Time-zone basics
→Time zones, UTC and offsets explained
Understand the difference between a regional time zone, a UTC offset and a time-zone abbreviation.
Changing clocks
→How daylight saving changes local time
Learn why some places move clocks, when offsets change and why comparisons must use a date.
Australia
→Understanding Australian time zones
A clear guide to standard time, daylight saving and half-hour offsets around Australia.
Practical planning
→How to plan a call across time zones
A simple process for choosing a reasonable meeting time for people in different cities.