Question 1

How does timezone conversion work?

Accepted Answer

Timezone conversion takes a given time in one timezone and calculates what that same moment is in other timezones. Each timezone has a UTC offset that determines its offset from Coordinated Universal Time (UTC).

Question 2

What is UTC offset?

Accepted Answer

UTC offset is the difference in hours and minutes between a timezone and Coordinated Universal Time. For example, UTC+5:30 means the local time is 5 hours and 30 minutes ahead of UTC. India uses IST (UTC+5:30).

Question 3

What is DST (Daylight Saving Time)?

Accepted Answer

Daylight Saving Time is the practice of advancing clocks by one hour during warmer months to extend evening daylight. Not all regions observe DST — for example, Arizona (US) and most of India do not. DST causes the UTC offset of a timezone to change twice a year.