CityTimeNow is an online resource for checking local time and time-zone information across 2,098 cities worldwide. Its live clocks use IANA time-zone rules, and city pages provide current UTC offsets, daylight saving status, and time comparisons with major locations. Visitors can search for a city, browse the city directory, or save favorite clocks for quick reference.

Beyond world clocks, CityTimeNow offers practical tools for coordinating schedules and understanding time. The Meeting Planner compares working hours across cities, while Event Time creates a shareable link that displays the appropriate local time for each viewer. Other features include a time-zone map and encyclopedia, date and duration calculators, market opening times, and embeddable clock, countdown, and sunlight widgets.

The site also provides worldwide New Year countdowns and information about sunrise, sunset, twilight, day length, golden hour, and blue hour. Its daylight-saving section helps users check whether locations observe clock changes and view upcoming or past transition dates. CityTimeNow presents its tools in multiple languages and includes selected global observances alongside current-time information.