Planning a meeting across time zones
Enter a proposed time and check that it falls in working hours for everyone. Times at night (10 pm to 7 am) are greyed out so they're easy to spot. When people are spread across many zones, the early morning in the Americas often lines up with the afternoon in Europe and the evening in South Asia.
Always share the time with the time zone written out, for example '15:00 London (UTC+00:00)', to avoid confusion.
Daylight saving time
The US, Canada, the UK and much of Europe move their clocks forward in spring and back in autumn, on different weekends. Pakistan, India, the UAE, Japan and many other countries don't change their clocks. Because the converter uses the exact date you pick, it shows the correct difference even in the weeks when only some countries have switched.