[time.duration.special]

# 30 Time library [[time]](./#time)

## 30.5 Class template duration [[time.duration]](time.duration#special)

### 30.5.5 Special values [time.duration.special]

[ð](#lib:zero,duration)

`static constexpr duration zero() noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L1571)

*Returns*: duration(duration_values<rep>​::​zero())[.](#1.sentence-1)

[ð](#lib:min,duration)

`static constexpr duration min() noexcept;
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L1582)

*Returns*: duration(duration_values<rep>​::​min())[.](#2.sentence-1)

[ð](#lib:max,duration)

`static constexpr duration max() noexcept;
`

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/time.tex#L1593)

*Returns*: duration(duration_values<rep>​::​max())[.](#3.sentence-1)
