Terms of use
Use this tool as a preflight and evidence fixture, not as a booking guarantee.
Service
Availability DST Audit converts declared weekly wall-clock hours through the IANA timezone rules available in your browser. It highlights daylight-saving boundaries and exports expected-slot fixtures.
No vendor parity claim
Schedulers may apply buffers, minimum notice, overrides, holidays, account settings, or proprietary rules that this tool does not know. A difference is a reason to investigate; it does not by itself prove that a vendor is defective.
Your responsibility
Review ambiguous and invalid local times, confirm your browser and operating system have current timezone data, and test critical booking flows in the actual product before publishing availability.
Availability and warranty
The tool is provided free of charge, “as is,” without warranties of uninterrupted availability, fitness for a particular purpose, or error-free timezone data. To the extent allowed by law, the maintainers are not liable for missed meetings, booking errors, or indirect loss.
License and changes
The source code is available under the MIT License. These terms may change as the utility evolves; continued use after publication means you accept the current version.
Effective: 27 August 2026.