ovos-date-parser

ovos-date-parser is a comprehensive library for multilingual date and time parsing, extraction, and formatting, designed to handle a range of human-readable date, time, and duration expressions.

Features

Date and Time Extraction: Extract specific dates and times from natural language phrases in various languages.
Duration Parsing: Parse phrases that indicate a span of time, such as "two hours and fifteen minutes."
Friendly Time Formatting: Format time for human-friendly output, supporting both 12-hour and 24-hour formats.
Relative Time Descriptions: Generate relative descriptions (e.g., "tomorrow," "in three days") for given dates.
Multilingual Support: Includes extraction and formatting methods for multiple languages, such as English, Spanish, French, German, and more.

Installation

pip install ovos-date-parser

Languages Supported

ovos-date-parser supports a wide array of languages, each with its own set of methods for handling natural language time expressions.

✅ - supported
❌ - not supported
🚧 - imperfect placeholder, usually a language agnostic implementation or external library

Parse

Language	`extract_duration`	`extract_datetime`
az	✅	✅
ca	✅	✅
cs	✅	✅
da	✅	✅
de	✅	✅
en	✅	✅
es	✅	✅
gl	✅	🚧
eu	❌	✅
fa	✅	✅
fr	❌	✅
hu	❌	🚧
it	❌	✅
nl	✅	✅
pl	✅	✅
pt	✅	✅
ro	✅	✅
ru	✅	✅
sv	✅	✅
uk	✅	✅

💡 If a language is not implemented for extract_datetime then dateparser will be used as a fallback

Format

Language	`nice_date` `nice_date_time` `nice_day` `nice_weekday` `nice_month` `nice_year` `get_date_strings`	`nice_time`	`nice_relative_time`	`nice_duration`
az	✅	✅	🚧	✅
ca	✅	✅	🚧	✅
cs	✅	✅	🚧	✅
da	✅	✅	🚧	✅
de	✅	✅	🚧	✅
en	✅	✅	🚧	✅
es	✅	✅	🚧	✅
gl	✅	✅	🚧	✅
eu	✅	✅	✅	✅
fa	✅	✅	🚧	✅
fr	✅	✅	🚧	✅
hu	✅	✅	🚧	✅
it	✅	✅	🚧	✅
nl	✅	✅	🚧	✅
pl	✅	✅	🚧	✅
pt	✅	✅	🚧	✅
ro	✅	✅	🚧	✅
ru	✅	✅	🚧	✅
sv	✅	✅	🚧	✅
sl	✅	❌	🚧	✅
uk	✅	✅	🚧	✅

Usage

Date and Time Extraction

Extract specific dates and times from a phrase. This function identifies date-related terms in natural language and returns both the datetime object and any remaining text.

from ovos_date_parser import extract_datetime

result = extract_datetime("Meet me next Friday at 3pm", lang="en")
print(result)  # (datetime object, "at 3pm")

Duration Extraction

Identify duration phrases in text and convert them into a timedelta object. This can parse common human-friendly duration expressions like "30 minutes" or "two and a half hours."

from ovos_date_parser import extract_duration

duration, remainder = extract_duration("It will take about 2 hours and 30 minutes", lang="en")
print(duration)  # timedelta object
print(remainder)  # "about"

Formatting Time

Generate a natural-sounding time format suitable for voice or display in different languages, allowing customization for speech or written text.

from ovos_date_parser import nice_time
from datetime import datetime

dt = datetime.now()
formatted_time = nice_time(dt, lang="en", speech=True, use_24hour=False)
print(formatted_time)  # "three o'clock"

Relative Time Descriptions

Create relative phrases for describing dates and times in relation to the current moment or a reference datetime.

from ovos_date_parser import nice_relative_time
from datetime import datetime, timedelta

relative_time = nice_relative_time(datetime.now() + timedelta(days=1), datetime.now(), lang="en")
print(relative_time)  # "tomorrow"

Documentation

API reference — every public function and its parameters
Language notes — per-language behaviour and known gaps
Adding a language — implementation guide
examples/ — runnable example scripts

Related Projects

ovos-number-parser - for handling numbers
ovos-lang-parser - for handling languages
ovos-color-parser - for handling colors

License

This project is licensed under the Apache 2.0 License

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