Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
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ReferenceTime and calendar

LanguageValues and typesStandard typesTime and calendar

LocalTime

On this page

A time on the clock, with no date or zone: 09:30:00.

Use it for a time that repeats, such as a shop opening at 09:30. For one moment, use Instant.

Shape

Field Type Required?
hour Int Yes
minute Int Yes
second Int Yes

Example

example
LocalTime { hour: 9 minute: 30 second: 0 }

text.parse(raw, as: LocalTime) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as 24:00:00, 09:30 or 9:30:00.

Good to know

  • The hour runs from 0 to 23. 24:00:00 is refused, and text needs the seconds, so 09:30 is refused as well.
  • == tells you whether two are the same, and < and list.sort_by compare and sort them.

In JSON

A string, in a request, a response or json.write:

json
"00:00:00""09:30:00""23:59:59"

Details

Text form, storage, how it is shown, and operations

LocalTime is in the group Time and calendar, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: 00:00:00, 09:30:00 and 23:59:59.

How it is stored

It is stored in one column named for the field, of type time. 09:30:00 is stored as '09:30:00.000000'::time.

How it is shown to people

text.format(value, locale:) shows it to people in their locale. A call also gives format:.

With locale: Locale.en_gb and format: TimeFormat.time_medium:

Value Shown
00:00:00 00:00:00
09:30:00 09:30:00
23:59:59 23:59:59

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-local-time.md.Built from Jadpo main at aee2e8f.