---
title: "Spans and durations — Opening Hours for Laravel | Roundly"
description: "List opening periods between two instants, test whole spans, and measure open or closed time in real elapsed seconds."
url: https://roundly-consulting.com/open-source/docs/opening-hours-for-laravel/spans-and-durations
language: en
---

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[Opening Hours for Laravel](https://roundly-consulting.com/open-source/docs/opening-hours-for-laravel.md)

# Spans and durations

Span queries work on coalesced periods clipped to the span:

```php
$hours->openingPeriodsBetween($monday, $monday->addWeek());   // list<OpeningPeriod>, clipped
$hours->isOpenDuring($from, $to);                              // open for the whole span
$hours->isClosedDuring($from, $to);                            // not open at any moment
$hours->openSecondsBetween($monday, $monday->addWeek());       // real elapsed seconds
$hours->closedSecondsBetween($from, $to);
$hours->openDurationBetween($from, $to);                       // CarbonInterval
```

- isOpenDuring() is true only when one continuous run covers the whole span; isClosedDuring() is true when no moment of it is open.
- Durations are real elapsed time — a 00:00–24:00 day lasts 23 or 25 hours on clock-change days.
- openDurationBetween() returns a cascaded CarbonInterval.
- Spans longer than max\_query\_days throw QueryRangeTooLargeException, carrying requestedDays and maxDays — isOpenDuring() and isClosedDuring() included.

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