Kotlin/kotlinx-datetime

Health v2 · maintenance only

Adoption not part of the score

2825 stars · 130 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A Kotlin multiplatform library for working with dates, times, and time zones based on the ISO 8601 standard. It provides a minimal, pragmatic API that clearly separates physical instants from time-zone-dependent civil time.

Use cases

• work with dates and times in Kotlin multiplatform code
• handle time zones and timezone conversions in Kotlin
• represent local dates and date-time components
• add calendar-based durations like months to an instant
• replace java.time in shared Kotlin code
• parse and format ISO 8601 dates

When to choose

• you need date/time handling shared across JVM, native, and JS Kotlin targets
• you want a minimal, safe API that prevents mixing instants with local time
• you need timezone-aware calendar arithmetic

When to avoid

• you need locale-specific formatting or internationalized month/day names
• you need domain-specific calendar utilities beyond common date/time operations
• you only target the JVM, where java.time is available

Facets

library · maturity active

date-time cross-platform developer-tools jvm windows wasm kotlin-multiplatform iso-8601 timezone jetbrains android ios macos linux

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markdown · JSON · MCP: product_card(name="Kotlin/kotlinx-datetime")