🕐 Timestamp Converter

Convert timestamps to dates and dates to timestamps with timezone support

Understanding Timestamps & Timezones

🕒 Timestamp Basics

Unix Timestamp

Seconds since January 1, 1970, 00:00:00 UTC (Unix Epoch). Universal standard used by most systems.

Example: 1640995200 = January 1, 2022, 00:00:00 UTC

Millisecond Timestamp

Milliseconds since Unix Epoch. Common in JavaScript and web applications for higher precision.

Example: 1640995200000 = same date with millisecond precision

ISO 8601 Format

Human-readable international standard for date/time representation.

Example: 2022-01-01T00:00:00Z

💡 Why Use Timestamps?

  • • Universal standard across all systems
  • • Immune to timezone changes
  • • Easy to store and compare
  • • Language and platform independent

🌍 Timezone Management

UTC (Coordinated Universal Time)

Primary time standard. No daylight saving time changes. Recommended for storing timestamps.

Local Time

Time in user's current timezone. Good for display purposes but problematic for storage.

Timezone Offset

Difference from UTC (e.g., +08:00 for Beijing, -05:00 for New York EST).

Common Timezone Issues:

Daylight Saving: Offsets change twice yearly
Cross-timezone: Meetings, deadlines coordination
Data consistency: Always store in UTC

🚀 Professional Use Cases

Software Development

  • • API response timestamps
  • • Log file analysis
  • • Database record dating
  • • Cache expiration times

System Administration

  • • Server log correlation
  • • Backup scheduling
  • • Performance monitoring
  • • Event synchronization

Data Analysis

  • • Time series analysis
  • • User behavior tracking
  • • Business intelligence
  • • Report generation

Business Operations

  • • Global team coordination
  • • Meeting scheduling
  • • Deadline management
  • • Compliance reporting

✅ Best Practices for Developers

✅ Do This

  • • Store all timestamps in UTC in your database
  • • Convert to user's timezone only for display
  • • Use ISO 8601 format for API responses
  • • Include timezone information in date strings
  • • Use millisecond precision for applications

❌ Avoid This

  • • Storing local time without timezone info
  • • Assuming user's timezone is constant
  • • Manual timezone calculations in code
  • • Ignoring daylight saving time changes
  • • Using local date parsing for timestamps

🕒 Convert Timestamp to Date

Timestamp Format

Date & Time Results:

Enter a timestamp to see the conversion results