Time-zone boundaries used by Friendly Landlord Contains information from Timezone Boundary Builder and OpenStreetMap contributors, made available under the Open Database License (ODbL)1.0. See LICENSE.txt. Source: https://github.com/evansiroky/timezone-boundary-builder/releases/tag/2026e OpenStreetMap: https://www.openstreetmap.org/copyright The source release archive is verified against its published SHA-256 digest. This derivative contains US/territory land-zone polygons without simplification, partitioned into2-degree tiles with0.1-degree padding. index.json maps a tile coordinate floor(longitude/2),floor(latitude/2) to either an all-covered IANA zone or [byte offset, compressed length, SHA-256] in boundaries.dat. Each record is a gzip JSON array of {zone, polygons:[GeoJSON Polygon coordinate arrays]} entries. Full original-precision rings and holes are retained. One-kilometer ambiguity guards require manual reviewed overrides at uncertain borders. No visitor data or apartment facts are included in this downloadable geographical database.