How to parse a datetime string with time zone in Jiff?

Use the `parse` method on types like `Timestamp`, as shown in the example, which handles formats like RFC 3339 and converts to zone-aware datetimes with `in_tz` for lossless operations.

Jiff vs chrono: which should I use for Rust datetime handling?

Jiff focuses on correctness and automatic time zone handling with a modern API, while chrono is more established but may require manual time zone management; check the COMPARE.md file for a detailed breakdown.

Does Jiff support serde for JSON serialization?

Yes, Jiff offers opt-in serde support via crate features, allowing datetime types to be serialized and deserialized in data interchange formats like JSON.

How to get the current time in a specific time zone with Jiff?

Call `Zoned::now()` to get the system time zone, then use methods like `in_tz` to convert, or directly create a zoned datetime with a time zone identifier as per the documentation examples.

What's the performance impact of using Jiff compared to the time crate?

Jiff prioritizes API correctness, so it may be slower in some operations; the README notes performance is secondary, and benchmarks are available but not fully optimized.

Is Jiff stable enough for production use?

Caution is advised as it's pre-1.0, with API changes possible until the stable release; the README targets 1.0 by mid-2026, but current versions may not be suitable for long-term APIs.

burntSushi/jiff — Rust Datetime Library

What is burntSushi/jiff?

Jiff is a datetime library for the Rust programming language that provides high-level primitives for handling dates, times, and time zones. It solves the common pitfalls of datetime manipulation by encouraging correct usage through its API design, integrating automatically with the IANA Time Zone Database and supporting DST-aware arithmetic.

Target Audience

Rust developers building applications that require robust datetime handling, such as scheduling systems, logging, data processing pipelines, or any software dealing with international time zones.

Value Proposition

Developers choose Jiff for its focus on correctness and ease of use—it makes datetime operations hard to misuse while providing seamless time zone support. Its design is inspired by the Temporal proposal, offering a modern alternative to existing Rust datetime libraries with an emphasis on API clarity and platform consistency.

A datetime library for Rust that encourages you to jump into the pit of success.

Use Cases

Best For

Building applications that handle scheduling across multiple time zones
Parsing and formatting RFC 3339 timestamps with time zone awareness
Performing date arithmetic that correctly accounts for Daylight Saving Time
Developing Rust services that require consistent datetime behavior on both Unix and Windows
Creating data serialization/deserialization pipelines with datetime fields
Implementing logging or auditing systems with precise, zone-aware timestamps

Not Ideal For

Projects demanding minimal binary size, especially on Windows where Jiff embeds the time zone database
High-throughput applications where datetime performance is critical, as optimization is secondary
Systems requiring advanced ICU localization features beyond time zone handling
Environments with strict zero-dependency policies due to platform-specific crates like windows-sys

Pros & Cons

Pros

Automatic Time Zone Integration

Seamlessly uses the IANA Time Zone Database with embedded support for Windows, ensuring consistent behavior across Unix and Windows platforms as per the PLATFORM.md documentation.

DST-Aware Arithmetic

Correctly handles Daylight Saving Time transitions in date calculations, preventing common errors like off-by-one-hour mistakes in scheduling.

Lossless Formatting/Parsing

Provides zone-aware serialization and deserialization without data loss, exemplified by the RFC 3339 parsing and formatting in the example code.

Correctness-First API Design

Encourages correct usage through high-level primitives that are hard to misuse, inspired by the Temporal proposal to reduce datetime pitfalls.

Cons

Pre-1.0 Instability

The API is not finalized, with the README noting slipped release deadlines and potential breaking changes until version 1.0, which may affect long-term projects.

Secondary Performance Focus

Explicitly prioritizes correctness over speed, meaning performance optimizations are limited and it may lag behind libraries like `time` in benchmarks.

Limited Niche Platform Support

Relies on contributor pull requests for obscure platforms, as admitted in the platform support section, which could hinder adoption in specialized environments.

Frequently Asked Questions

What is burntSushi/jiff?

Target Audience

Rust developers building applications that require robust datetime handling, such as scheduling systems, logging, data processing pipelines, or any software dealing with international time zones.

Value Proposition

Use Cases

Best For

Building applications that handle scheduling across multiple time zones
Parsing and formatting RFC 3339 timestamps with time zone awareness
Performing date arithmetic that correctly accounts for Daylight Saving Time
Developing Rust services that require consistent datetime behavior on both Unix and Windows
Creating data serialization/deserialization pipelines with datetime fields
Implementing logging or auditing systems with precise, zone-aware timestamps

Not Ideal For

Projects demanding minimal binary size, especially on Windows where Jiff embeds the time zone database
High-throughput applications where datetime performance is critical, as optimization is secondary
Systems requiring advanced ICU localization features beyond time zone handling
Environments with strict zero-dependency policies due to platform-specific crates like windows-sys

Pros & Cons

Pros

Automatic Time Zone Integration

Seamlessly uses the IANA Time Zone Database with embedded support for Windows, ensuring consistent behavior across Unix and Windows platforms as per the PLATFORM.md documentation.

DST-Aware Arithmetic

Correctly handles Daylight Saving Time transitions in date calculations, preventing common errors like off-by-one-hour mistakes in scheduling.

Lossless Formatting/Parsing

Provides zone-aware serialization and deserialization without data loss, exemplified by the RFC 3339 parsing and formatting in the example code.

Correctness-First API Design

Encourages correct usage through high-level primitives that are hard to misuse, inspired by the Temporal proposal to reduce datetime pitfalls.

Cons

Pre-1.0 Instability

The API is not finalized, with the README noting slipped release deadlines and potential breaking changes until version 1.0, which may affect long-term projects.

Secondary Performance Focus

Explicitly prioritizes correctness over speed, meaning performance optimizations are limited and it may lag behind libraries like `time` in benchmarks.

Limited Niche Platform Support

Relies on contributor pull requests for obscure platforms, as admitted in the platform support section, which could hinder adoption in specialized environments.

Frequently Asked Questions

burntSushi/jiff

What is burntSushi/jiff?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

burntSushi/jiff

What is burntSushi/jiff?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?