Timeanddate
Calendars, world clocks, countdowns, and date calculators.
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Run the open-source version on your own infrastructure.
What is Timeanddate?
Timeanddate is an open-source web tool designed to help users manage time zones, track celestial events, and organize schedules across global locations. Its primary purpose is to simplify time-related calculations and provide accurate information for planning international activities. Users include travelers, remote teams, event planners, and educators who need to coordinate across different time zones or track astronomical phenomena. The tool solves problems like time zone confusion, event scheduling conflicts, and the need for precise calendar management by offering real-time data and calculation features.
How it works
Timeanddate is a web-based platform that provides tools for time zone conversion, calendar management, and celestial event tracking. It serves as a centralized hub for users to access current global time data, calculate time differences, and plan events with precision. The tool addresses challenges such as coordinating international meetings, understanding seasonal time changes, and managing recurring events across multiple regions. Its open-source nature allows customization and integration for specific use cases. Timeanddate offers a world clock displaying current times in major cities and time zones, a timezone map with dynamic summer/winter time updates, and a conference planner for scheduling global meetings. It also includes a date calculator for adding/subtracting days, a workday counter for project timelines, and tools for generating printable calendars with custom logos.
How to use it
- 1Visit timeanddate.com and navigate to the world clock section to view current times in selected cities. 2. Use the timezone converter tool to calculate differences between two locations. 3. Input event details in the event planner to see local start times across time zones. 4. Generate a printable calendar via the PDF template or customize it with a logo. Practical tips: Bookmark the world clock for quick access, use the API for automated time calculations, and check the timezone map for seasonal adjustments. For event planning, combine the calendar and event planner tools to sync recurring tasks.
What it can do
- calendars and clocks
Use cases
Assumptions and limitations
Assumptions
- source: https://www.timeanddate.com/
- license: Open source
- privacy: Opens an external demo
Limitations
- Lacks a dedicated mobile application for on-the-go use
- Printable calendars have limited customization options beyond logo insertion
- Celestial event data may not include rare or localized phenomena
- API documentation is minimal, restricting advanced integration
- No built-in notifications for time zone changes or event reminders
Understanding the result
Calendars, world clocks, countdowns, and date calculators.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (https://www.timeanddate.com/)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://www.timeanddate.com/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
Frequently asked
How does Timeanddate handle daylight saving time changes?
Timeanddate automatically updates its timezone data to reflect current and upcoming daylight saving time transitions. Users can verify seasonal adjustments on the timezone map, which displays both standard and daylight saving time periods. The tool does not provide historical DST data for past events.
How does the date calculator API work?
The API calculates the number of business days between dates and can determine work periods based on user-defined parameters. It excludes weekends and holidays, though holiday data must be provided separately. The API returns results in JSON format and requires an HTTP request with start/end dates as inputs.
How do I plan an event that spans multiple time zones?
Use the event planner tool by entering the event’s start time in one timezone. The tool will display the local time for all other regions. For example, if an event starts at 10:00 AM in New York (ET), the planner will show 1:00 PM in London (GMT) and 7:00 PM in Tokyo (JST). Save the schedule to compare time overlaps.
How does Timeanddate compare to Google Calendar?
Timeanddate excels in timezone conversions and celestial event tracking, while Google Calendar focuses on personal scheduling and calendar sharing. Timeanddate’s timezone map and conference planner are more specialized for global coordination, whereas Google Calendar integrates with email and reminders. Both tools can be used together for comprehensive time management.
What should I do if the time zone converter shows incorrect results?
Verify the input locations against the timezone map to ensure correct region selection. Check for typos in city names or country codes. If issues persist, consult the timezone converter’s FAQ or contact support with specific details about the discrepancy. Ensure your browser’s clock is synchronized for accurate local time references.