What it does

When followers are split between, say, New York, London and Dubai, the right time for one group is the middle of the night for another. This converter checks all 24 UTC hours and scores each by the share of your selected zones that fall between 08:00 and 22:00 local time, then lists the hours with the highest coverage.

A slider lets you test any single UTC hour and see the local time and awake or asleep status in every chosen zone. The best windows and zone breakdown can be copied as text for a scheduling tool that works in UTC.

How to use it

1
Tick the zones in Audience timezones (13 are available, from Los Angeles to Sydney plus UTC).
2
Drag the UTC hour slider to test a specific time.
3
Read Zones selected, Awake now, Best UTC hour and Max coverage.
4
Check the table for each zone's local time and Awake or Asleep status.
5
Read Best UTC posting windows and click Copy recommended times.

What you get

A list of best UTC hours with coverage percentages, coverage for the hour on the slider, a per-zone local time and status table, and a copyable text version.

When to use it

US and UK audience overlap: Tick New York and London to find the UTC hours where both are awake.
Timing a global announcement: Select every region you serve and post in the window with the highest coverage.
Setting a UTC scheduler: Copy the recommended UTC hours straight into a scheduling tool set to UTC.
Checking a planned slot: Drag the slider to your planned time and see which regions would be asleep.

Example

Input

Zones: UTC, New York (ET), London (GMT/BST). Slider at UTC 12:00.

Output

At 12:00 UTC: New York 07:00 (Asleep), London 12:00 (Awake), coverage 67%. Best UTC windows: 13:00 to 22:00, all at 100%. Best UTC hour shows 13:00.

New York uses a fixed -5 offset, so it is awake from 13:00 UTC onward; UTC and London are awake until 22:00 UTC.

Tips

The offsets are fixed and do not follow daylight saving time, so shift results by an hour for regions currently on summer time.
Pick the earliest hour of a 100% window if you want the post live for the longest overlap.
Only tick zones where you have a meaningful share of followers; one minor region can shrink the best window a lot.
Once you have a UTC window, use the day-of-week guide to choose which days to post in it.

Questions

Does the timezone converter adjust for daylight saving time?

No. Each zone uses a fixed offset, such as -5 for New York and 0 for London. During daylight saving, local times can be about an hour off, and the tool notes this.

What counts as awake in the coverage score?

Any local hour from 08:00 to 22:00. Coverage is the share of selected zones inside that range at a given UTC hour.

Why are there several best UTC hours instead of one?

Every hour that ties for the highest coverage is listed, so you get a window to choose from. The stat card shows the earliest.

Can I add a time zone that is not in the list?

Not currently. The tool offers 13 zones, so pick the closest one with the same UTC offset as your audience.