x-wr-timezone
Repair Google Calendar - This Python module and program makes ICS/iCalendar files using X-WR-TIMEZONE compatible with the RFC 5545 standard.
Decision gist · record as of 2026-08-14
Yes. The package solves a real, specific problem with minimal dependencies and no security vulnerabilities. It is actively maintained, has a stable API, and works as both a library and CLI tool. The copyleft license is standard for calendar software and poses no barrier for most use cases. Install it if you need to work with calendar files that use X-WR-TIMEZONE.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low friction: pure Python wheel with three lightweight runtime dependencies (icalendar, tzdata, click).
- Actively maintained with a recent release and no known vulnerabilities.
License · maintenance · safety
LGPL-3.0-or-later (copyleft) — Licensed under LGPL-3.0-or-later (copyleft). You may use and modify the package freely, but any derivative work must also be released under a compatible copyleft license.
last release 2025-02-06 (554 days) · last repo commit 2026-07-20 · 6 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 2,070,212 downloads/mo, #3,324 on PyPI
Alternatives
Verify before relying
pip install x-wr-timezone
import icalendar
import x_wr_timezone
with open('in.ics', 'rb') as f:
calendar = icalendar.from_ical(f.read())
standardized = x_wr_timezone.to_standard(calendar)
with open('out.ics', 'wb') as f:
f.write(standardized.to_ical())- Whether the package handles all edge cases in real-world calendar files beyond the documented DTSTART, DTEND, EXDATE, RDATE properties
What it is and what it does
X-WR-TIMEZONE is a Python module that solves a compatibility problem in calendar files. Some calendar creators, notably Google Calendar, add a non-standard X-WR-TIMEZONE parameter to ICS files to specify the timezone for events. However, strict RFC 5545 parsers ignore this parameter, causing events to display at incorrect times when imported into standards-compliant calendar applications. This module bridges that gap by converting calendars using X-WR-TIMEZONE into proper RFC 5545-compliant calendars where timezone information is correctly embedded.
The package works both as a Python library and as a command-line tool. As a library, you pass an icalendar.Calendar object to the to_standard() function, which returns a converted calendar without modifying the original. The function is idempotent—passing a calendar through it twice produces no further changes. The command-line interface accepts calendar files via stdin or as arguments, making it easy to pipe output from wget or curl directly into the converter.
Use it for
- Convert Google Calendar exports to RFC 5545 compliance before importing into strict calendar applications
- Standardize calendar files in a build pipeline to ensure consistent timezone handling across different calendar clients
- Process calendar feeds from third-party sources that use X-WR-TIMEZONE via curl or wget piping
- Repair timezone display issues when importing calendars into applications that don't recognize X-WR-TIMEZONE
- Batch-convert a directory of calendar files to ensure they work correctly with standards-compliant tools
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package solves a real, specific problem with minimal dependencies and no security vulnerabilities. It is actively maintained, has a stable API, and works as both a library and CLI tool. The copyleft license is standard for calendar software and poses no barrier for most use cases. Install it if you need to work with calendar files that use X-WR-TIMEZONE.
Install
x-wr-timezone on PyPI
Before you install
Low friction: pure Python wheel with three lightweight runtime dependencies (icalendar, tzdata, click). Actively maintained with a recent release and no known vulnerabilities.
License in practice
Licensed under LGPL-3.0-or-later (copyleft). You may use and modify the package freely, but any derivative work must also be released under a compatible copyleft license.
Quickstart
pip install x-wr-timezone
import icalendar
import x_wr_timezone
with open('in.ics', 'rb') as f:
calendar = icalendar.from_ical(f.read())
standardized = x_wr_timezone.to_standard(calendar)
with open('out.ics', 'wb') as f:
f.write(standardized.to_ical())Verify before relying
- Whether the package handles all edge cases in real-world calendar files beyond the documented DTSTART, DTEND, EXDATE, RDATE properties
Package facts
| License | LGPL-3.0-or-later copyleft |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 3 packagesicalendartzdataclick |
| Maintenance | Actively maintained 554 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 2,070,212 / month, #3,324 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)Natural Language :: EnglishOperating System :: OS IndependentProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Python ModulesTopic :: Utilities |
Evidence: x_wr_timezone-2.0.1-py3-none-any.whl
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See also icalendar · ics · ical · cftime · python-dateutil · strict-rfc3339 · pyCalverter · recurring-ical-events · tzlocal · pytz