Crates / Compare / time vs jiff
Rust crates side by side · data Oct 24, 2026
time vs jiff
Short answerBy steady daily use, time is bigger: 2,434,189 real downloads a day against 981,794 for jiff (2.5x). 6,747 crates depend on time and 1,531 on jiff. time last shipped 3 months ago, jiff 18 days ago.
time
Widely usedWidely used and steady.
6,747 crates depend on it; downloads don't spike on releases.
Date and time library. Fully interoperable with the standard library. Mostly compatible with #![no_std].
jiff
Widely usedWidely used and gaining.
1,531 crates depend on it; downloads don't spike on releases.
A date-time library that encourages you to jump into the pit of success. This library is heavily inspired by the Temporal project.
timejiff · 100% = that crate's normal quiet day, so a spike to 300% is triple its usual traffic
How they relate
- Often used together: 4 tracked crates depend on both (serde_with, zip, pyo3, rusqlite). They are not always either/or.
Every number, side by side
| Same window, same method | time | jiff |
|---|---|---|
| Real downloads a day | 2,434,189 | 981,794 |
| Crates that depend on it | 6,747 | 1,531 |
| Last release | 0.3.55, 3 months ago | 0.2.38, 18 days ago |
| Trend vs the field | -4% | +34% |
| Release-window share | 1.3% | 4.7% |
| Downloads in the window | 215,804,157 | 93,484,872 |
| All-time downloads | 1,003,554,500 | 240,946,897 |
| Versions published | 135 | 70 |
| License | MIT OR Apache-2.0 | Unlicense OR MIT |
| MSRV | 1.88.0 | 1.70 |
| First published | Nov 13, 2014 | Feb 17, 2024 |
Which to pick
- Downloads tell you what is common, not what fits. Each crate's own description above says what it is for; when the jobs differ, pick by the job.
- When both fit, prefer the one more crates depend on (time, 6,747 dependents): more eyes, more answered questions, and you may already have it in your tree.
- Check the release dates against your own pace: time 3 months ago, jiff 18 days ago.
Also in this space
Method
Real downloads = the median day with no release that day or the day before, from the crates.io API (Jul 27, 2026 to Oct 23, 2026). Raw crates.io counts include CI and bots and run high (why); the method is from our 90-day study.
Up next
Another comparison: Same method, same window. Foundational and steady vs widely used and steady.chrono vs timeRead it next →Also worth your time