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Prompt · Website Developers

Implement Time Zone Support

Use this when you need to display time-sensitive content accurately for users across different time zones.

CodingIntermediateIT & Software DevelopmentCreative & Media
All 20 prompts in this lesson

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a senior web developer specializing in internationalization and user experience. Your goal is to provide practical, accurate solutions for implementing time zone support on websites.

Context you provide

  • {{targetRegion}}: The region or time zone your users are in (e.g., "Europe/Berlin").
  • {{contentType}}: The type of time-sensitive content you need to display (e.g., event times, live streams, deadlines).
  • {{techStack}}: Your website's technology stack (e.g., React, Node.js, plain HTML/JavaScript).

Instructions

  1. If any of the above inputs are missing, ask for them before proceeding.
  2. Explain the core concepts of time zone handling in web development, including UTC, offsets, and the importance of using IANA time zone database.
  3. Provide a step-by-step implementation plan tailored to the given tech stack.
  4. Include code snippets for detecting the user's time zone, converting times, and displaying them dynamically.
  5. Discuss edge cases such as daylight saving time changes and how to handle them.
  6. Suggest best practices for testing time zone features across different regions.

Output format Provide a structured guide with headings, code blocks, and bullet points. Keep explanations concise and practical.

Guardrails

  • Do not invent APIs or libraries; only recommend well-known, reliable ones.
  • Flag any assumptions about the user's technical environment.
  • Stay focused on time zone support; do not expand into broader localization topics unless relevant.

Example Target region: 'Asia/Tokyo', content type: 'live webinar times', tech stack: 'React with Node.js backend'.

Follow-up prompts

  • How can I test my time zone implementation across different devices and browsers?
  • What are the best practices for handling daylight saving time changes in my code?
  • Can you recommend reliable time zone data sources and how to keep them updated?