ISO 3307-1975 rus PDF

Full title and description

ISO 3307:1975 — Information interchange — Representations of time of the day. This short International Standard defined recommended notations for representing the time of day (hours, minutes, seconds and fractional seconds) for use in information interchange and data processing contexts.

Abstract

ISO 3307:1975 specified a concise, machine- and human-readable way to record the time of day in electronic and paper interchange. It addressed numerical formats, precision down to fractional seconds, and the use of consistent notation so that time values could be unambiguously exchanged between systems. The requirements of ISO 3307 were later consolidated into ISO 8601.

General information

• Status: Withdrawn (superseded by ISO 8601).
• Publication date: March 1975 (approved 1 March 1975 in ISO records).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 01.140.30 (Documents in administration, commerce and industry); 35.240.63 (IT applications in trade).
• Edition / version: Edition 1 (1975).
• Number of pages: 2 pages (short technical recommendation).

Scope

Defines recommended formats for representing the time of day in information interchange and data processing. The standard focused on numeric representations of hours, minutes and seconds (including fractional seconds) and on providing an unambiguous, compact form suitable for automated processing. It did not attempt to cover time‑zone differentials in detail (ISO 4031 and later ISO 8601 address offsets and time zones).

Key topics and requirements

• Numeric notation for hours, minutes and seconds (consistent field order and fixed-width fields to avoid ambiguity).
• Rules for including fractional seconds where higher precision is required.
• Recommendations suited for data interchange and computer processing (compact and machine-parseable formats).
• Guidance to use consistent notation when combining time with date fields; time‑zone offsets handled by related standards.
• Intended to be usable in both human-readable and machine-readable contexts (hence brief and precise).

Typical use and users

Software developers, systems integrators, data interchange architects, standards implementers, librarians and archivists, and organisations exchanging timestamped data in commerce, transport and administration. Historically used in early message protocols and data formats until consolidation under ISO 8601.

Related standards

ISO 3307:1975 was one of several predecessor standards consolidated into ISO 8601. Closely related documents include ISO 4031 (representation of local time differentials) and earlier date-related recommendations (ISO 2014, ISO 2015). The modern consolidated reference is ISO 8601 (first consolidated in 1988 and subsequently revised).

Keywords

time of day, time representation, time format, hours, minutes, seconds, fractional seconds, information interchange, ISO 3307, ISO 8601, withdrawn, rus (Russian catalog/language tag).

FAQ

Q: What is this standard?

A: ISO 3307:1975 is an ISO recommendation titled "Information interchange — Representations of time of the day" that defines recommended numeric notations for representing the time of day for use in information interchange.

Q: What does it cover?

A: It covers compact, unambiguous numeric representations of hours, minutes, seconds and fractional seconds suitable for machine processing and interchange; it gives basic formatting guidance and precision rules while leaving detailed time‑zone handling to companion standards.

Q: Who typically uses it?

A: Historically it was used by IT and communications professionals, protocol designers and organisations exchanging timestamped data. Today, implementers follow ISO 8601 (which incorporated and extended ISO 3307).

Q: Is it current or superseded?

A: ISO 3307:1975 has been withdrawn and was superseded by ISO 8601 (first consolidated in 1988). The ISO catalogue lists ISO 3307 as withdrawn; users should use the relevant edition of ISO 8601 for current guidance. (Publication: March 1975; withdrawn from ISO sale/maintenance and consolidated under ISO 8601 — withdrawal activity recorded in ISO metadata.)

Q: Is it part of a series?

A: Yes — ISO 3307 was one of several date/time-related recommendations (together with ISO 2014, ISO 2015, ISO 2711, ISO 4031, etc.) that were later combined into the ISO 8601 family.

Q: What are the key keywords?

A: Time of day, time format, HHMM, HH:MM:SS, fractional seconds, information interchange, ISO 3307, ISO 8601, withdrawn, translation (rus).