tijd2

Tijd2 is a data format and software library designed for precise time representation and time series data. It defines a compact binary encoding for time points, durations, and intervals, and provides APIs for creating, manipulating, and querying time-based data.

Tijd2 was developed by the Tijd Consortium as a successor to Tijd1, with goals of improved precision, interoperability, and scalability for large-scale time-series datasets. The project places emphasis on accuracy across time zones, leap seconds, and calendar irregularities.

Core concepts include time points with sub-nanosecond precision, durations, intervals, recurring events, and metadata. It supports UTC, multiple time zones, and a universal time representation, and includes constraints to preserve temporal ordering and support queries such as containment, overlap, and adjacency.

Formats and implementations: Tijd2 specifies a binary encoding optimized for storage efficiency and a human-readable text representation. Reference implementations exist in multiple programming languages, released under an open-source license. The standard is designed to interoperate with ISO 8601 and existing time-series tools.

Applications and reception: The format is used in scientific instrumentation, financial analytics, and archival systems requiring high-precision timing and robust temporal rules. Tijd2 aims for backward compatibility with Tijd1 while enabling new features such as extended precision and richer metadata.

Governance and resources: The Tijd Consortium maintains the specification through community input and a lightweight standardization process. Documentation, test suites, and repositories are publicly accessible.