Effective Dates

Required roles: AIS PIB API — Roles
Base endpoint: https://ais-pib-api.ibosoft.net.tr:2087/eff-dates
Reference documents: ICAO Annex 15, Ed. 16 (Amend. 41) (8/11/18) · ICAO Doc 8126 Aeronautical Information Services Manual, Ed. 7, Amend. 1 (30/07/24) · Jeppesen Airway Manual
Attribution: show ibonav.aero wherever this data is displayed
Data sources: none — calculated.
Last updated: 17 OCT 2026

About the reference documents: Related Documents and Resources

AIRAC cycles and Jeppesen bi-weekly cycles: the current cycle, the effective date of a cycle or of a date, and the AIRAC advance dates (28, 42 and 56 days before the effective date). Calculated on request; all dates are UTC.

Endpoints

Endpoint Description
GET /eff-dates/airac-current Current AIRAC cycle
GET /eff-dates/airac-effective AIRAC cycle and effective date for a cycle or a date
GET /eff-dates/airac-advance-28 28 days before the AIRAC effective date
GET /eff-dates/airac-advance-42 42 days before the AIRAC effective date
GET /eff-dates/airac-advance-56 56 days before the AIRAC effective date
GET /eff-dates/jepp-biweek-current Current Jeppesen bi-weekly cycle
GET /eff-dates/jepp-biweek-effective Jeppesen cycle and effective date for a cycle or a date

Parameters

The -current endpoints take no parameters. The others take exactly one of:

Parameter Description
cycle AIRAC: YYNN (e.g. 1812). Jeppesen: NN-YYYY (e.g. 01-2026)
date UTC date, YYYY-MM-DD or ISO 8601 date-time; gives the cycle in effect on that date

Supported range: AIRAC from 1 November 1964 to 2099; Jeppesen from 1 January 1970 to 2099.

How cycles are counted

  • AIRAC: common effective dates at 28-day intervals (Annex 15, Chapter 6; Doc 8126, 3.5), counted from the reference 8 November 2018 = AIRAC 1812. YY is the year, NN the number of the cycle within that year.
  • Jeppesen bi-weekly: the 14-day revision cycle of the Jeppesen Airway Manual, from the reference 2 January 2026 = 01-2026. NN is the number of the cycle within the year.

Response

/airac-current, /airac-effective, /jepp-biweek-current, /jepp-biweek-effective

GET /eff-dates/airac-effective?cycle=1812
GET /eff-dates/airac-effective?date=2018-11-08

{"cycle": "1812", "effective_date": "2018-11-08", "effective_date_fmt": "08 NOV 2018"}

GET /eff-dates/jepp-biweek-effective?cycle=01-2026

{"cycle": "01-2026", "effective_date": "2026-01-02", "effective_date_fmt": "02 JAN 2026"}

/airac-advance-28, -42, -56

{"advance_date": "2018-10-11", "advance_date_fmt": "11 OCT 2018"}

Errors

Invalid input gives 422:

{"valid": false, "error": "Invalid or out-of-range AIRAC cycle: '1814'."}
Case error
Both parameters Provide either 'cycle' or 'date', not both.
Neither parameter Either 'cycle' or 'date' query parameter is required.
Invalid cycle Invalid or out-of-range … cycle: '…'.
Unreadable date Cannot parse date: '…'. Expected YYYY-MM-DD or ISO datetime.
Date too early Date is before the minimum supported date (…).
Year too late Date exceeds the maximum supported year (…).