HowardHinnant/date
A date and time library based on the C++11/14/17 <chrono> header observed · 2026-10-20
Health v2 · maintenance only
84/100
- Activity 100
- Release rhythm 55
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 425
- age_days: 4113
- days_rel: 85
- days_push: 1
- n_releases_24m: 2
Adoption not part of the score
3436 stars · 742 forks observed · 2026-10-20
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
A C++11/14/17 date and time library built on <chrono>, providing field types like year_month_day, timezone support via a complete IANA tz database parser, and ISO week, Julian, and Islamic calendars. Its core parts were adopted into the C++20 standard.
Use cases
- parse and format dates in C++
- convert between timezones in C++
- handle daylight saving time correctly
- work with ISO week dates
- compute with leap seconds
When to choose
- you need robust date/time handling in C++ pre-C++20
- you need IANA timezone database access in C++
- you want a header-only date library
When to avoid
- you are on C++20 or later and can use std::chrono directly
- you need date/time handling in a language other than C++
Facets
library · maturity stable
date-time developer-tools cross-platform cpp cross-platform header-only chrono timezone iana-tz-database calendar c++20-chrono-preview
1 source
- readme: https://github.com/HowardHinnant/date · fetched 2026-10-20 · cb9de25e8d67
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| HowardHinnant/date | main | 84 |
For agents
markdown · JSON · MCP: product_card(name="HowardHinnant/date")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem