waxt 0.1.1

A modern Python library for multi-calendar date conversions (Jalali, Hijri, Gregorian)

🗓️ Waxt

A modern Python library for converting dates between Jalali (Persian/Solar), Hijri (Islamic/Lunar), and Gregorian calendars with full timezone support.

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📦 Installation

pip install waxt

Requires Python 3.10+ and pytz.

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✨ Features

Feature	Description
🔄 Multi-Calendar	Jalali (Persian/Solar), Hijri (Islamic/Lunar), Gregorian
🌍 Timezone Aware	Full pytz timezone support — convert, localize, compare
📅 Date Arithmetic	Add days/months with calendar-aware month lengths and leap years
🎨 Flexible Formatting	Custom format strings (%Y, %m, %d, %H, %M, %S)
📝 Parsing	Parse date strings back to datetime from any calendar
🌐 Localized Month Names	Persian (fa), Arabic (ar), English (en)
🧪 Well Tested	Comprehensive test suite with round-trip integrity checks
🎯 Type Hints	Fully typed for great IDE support
🪶 Lightweight	Only dependency: pytz

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🚀 Quick Start

Create a DateService

DateService is the main entry point. Configure it with a timezone and calendar type.

from waxt.date_service import DateService

# Jalali (Persian) calendar in Tehran
svc = DateService(timezone="Asia/Tehran", calendar="jalali")

# Hijri (Islamic) calendar in Riyadh
svc = DateService(timezone="Asia/Riyadh", calendar="hijri")

# Gregorian calendar in UTC (default-like)
svc = DateService(timezone="UTC", calendar="gregorian")

Calendar options: "jalali", "hijri", "gregorian".

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Current Date & Time

svc = DateService(timezone="Asia/Tehran", calendar="jalali")

now = svc.now()                     # current datetime in Tehran
now_utc = svc.now_utc()            # current datetime in UTC

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Get Date Components (Year, Month, Day)

Returns components in the configured calendar:

from datetime import datetime

svc = DateService(timezone="Asia/Tehran", calendar="jalali")

dt = datetime(2025, 6, 15)
year, month, day = svc.get_date_components(dt)
# (1404, 3, 25) — Jalali equivalent

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Format Dates

svc = DateService(timezone="Asia/Tehran", calendar="jalali")
dt = datetime(2025, 6, 15, 14, 30, 0)

# Default format: YYYY/MM/DD
svc.format_date(dt)                        # "1404/03/25"

# With time
svc.format_date(dt, include_time=True)     # "1404/03/25 14:30:00"

# Custom format string
svc.format_date(dt, format_str="%Y-%m-%d") # "1404-03-25"
svc.format_date(dt, format_str="%d/%m/%Y %H:%M")  # "25/03/1404 14:30"

Format specifiers: %Y (year), %m (month), %d (day), %H (hour), %M (minute), %S (second).

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Parse Date Strings

Parse a date string into a datetime object. Input is interpreted in the configured calendar.

svc = DateService(timezone="Asia/Tehran", calendar="jalali")

dt = svc.parse_date("1404/03/25")
# datetime(2025, 6, 15, 0, 0, 0) — Gregorian equivalent

dt = svc.parse_date("1404-03-25 14:30:00")
# datetime(2025, 6, 15, 14, 30, 0)

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Timezone Conversion

from datetime import datetime
import pytz

svc = DateService(timezone="Asia/Tehran", calendar="gregorian")

utc_dt = datetime(2025, 6, 15, 10, 0, 0, tzinfo=pytz.UTC)

# UTC → Tehran
local_dt = svc.to_company_timezone(utc_dt)
# datetime(2025, 6, 15, 13, 30, 0, tzinfo=...)

# Tehran → UTC
back_to_utc = svc.to_utc(local_dt)
# datetime(2025, 6, 15, 10, 0, 0, tzinfo=UTC)

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Date Arithmetic

from datetime import datetime

svc = DateService(timezone="UTC", calendar="jalali")
dt = datetime(2025, 6, 15)

# Add days (works on Gregorian datetime)
dt2 = svc.add_days(dt, 10)        # datetime(2025, 6, 25)

# Add months (calendar-aware — respects month lengths and leap years)
dt3 = svc.add_months(dt, 3)       # +3 Jalali months from 1404/03/25

# Negative values work too
svc.add_days(dt, -5)
svc.add_months(dt, -2)

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Month Names

svc = DateService(timezone="UTC", calendar="jalali")
svc.get_month_name(1, locale="fa")  # "فروردین"
svc.get_month_name(1, locale="en")  # "Farvardin"

svc = DateService(timezone="UTC", calendar="hijri")
svc.get_month_name(1, locale="ar")  # "محرم"
svc.get_month_name(1, locale="en")  # "Muharram"

svc = DateService(timezone="UTC", calendar="gregorian")
svc.get_month_name(1, locale="en")  # "January"
svc.get_month_name(1, locale="fa")  # "ژانویه"

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Day Boundaries

svc = DateService(timezone="UTC", calendar="gregorian")
dt = datetime(2025, 6, 15, 14, 30, 0)

svc.start_of_day(dt)  # datetime(2025, 6, 15, 0, 0, 0)
svc.end_of_day(dt)    # datetime(2025, 6, 15, 23, 59, 59, 999999)

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Factory Helper

from waxt.date_service import create_date_service_for_company

# Reads timezone and calendar attributes from a company object
svc = create_date_service_for_company(company)

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📚 API Reference

DateService(timezone, calendar)

Method	Returns	Description
now()	datetime	Current time in configured timezone
now_utc()	datetime	Current UTC time
to_company_timezone(utc_dt)	datetime	Convert UTC → local timezone
to_utc(local_dt)	datetime	Convert local → UTC
get_date_components(dt)	(year, month, day)	Extract date parts in configured calendar
format_date(dt, format_str, include_time)	str	Format date with calendar-aware year/month/day
parse_date(date_str, format_str, time_component)	datetime	Parse date string → Gregorian datetime
get_month_name(month, locale)	str	Month name in fa, ar, or en
add_days(dt, days)	datetime	Add/subtract days
add_months(dt, months)	datetime	Add/subtract months (calendar-aware)
get_year_month(dt)	(year, month)	Get year+month only
start_of_day(dt)	datetime	Set time to 00:00:00
end_of_day(dt)	datetime	Set time to 23:59:59.999999

Calendar Constants

Constant	Value
DateService.CALENDAR_JALALI	"jalali"
DateService.CALENDAR_HIJRI	"hijri"
DateService.CALENDAR_GREGORIAN	"gregorian"

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🧪 Development

Setup

git clone https://github.com/kak-smko/waxt.git
cd waxt
python -m venv .venv
source .venv/bin/activate
pip install -e ".[dev,test]"

Run tests

pytest           # with coverage
pytest -x -v     # stop on first failure, verbose

Lint & type check

black waxt tests
isort waxt tests
mypy waxt
flake8 waxt tests

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📄 License

BSD-3-Clause. See LICENSE.