feed_expiration_date_30_days: feed expires within 30 days Warning
The feed_end_date in feed_info.txt falls within the next 30 days. What it signals for rider apps and journey planners, and how to respond in time.
What this rule means
feed_info.txt can state the period a feed covers with feed_start_date and feed_end_date. When feed_end_date is less than 30 days after the validation date, the validator raises this notice. It has a sibling notice for an even closer end, within 7 days. Severity: warning.
The rule does not say the data is wrong today. It says the data will soon stop covering the service.
Why it matters
A warning does not block a delivery in GTFS Express. But after feed_end_date, apps and journey planners have no timetable left to offer: the network drops out of their results, and some reusers set aside a feed they consider stale. Best practice is to publish a feed covering at least the next 30 days, ideally the whole period already known.
Common causes
- Next season's feed has not been produced or published yet.
feed_end_datewas left at an old value although the calendars were extended.- Calendars stop at the end of a school term while the next term's timetable is pending.
How to fix it
The real fix is to publish data covering the coming period: extend or add services in calendar.txt and calendar_dates.txt, then align feed_end_date with the last service date. Do not push feed_end_date back on its own: the date must reflect the calendars, otherwise the file promises timetables it does not hold.
In GTFS Express, the validation report shows the date involved and "Fix one by one" opens feed_info.txt in the editor. New services are prepared in a draft, each change being a retouch, and "Re-validate" then checks the result.
Example
Validated on 21 October 2026, this feed expires on 2 November:
feed_publisher_name,feed_publisher_url,feed_lang,feed_start_date,feed_end_date
Example Transit,https://transit.example.org,en,20260901,20261102After adding the next period's services:
feed_publisher_name,feed_publisher_url,feed_lang,feed_start_date,feed_end_date
Example Transit,https://transit.example.org,en,20260901,20270704See also the guide Modify a GTFS feed and the list of rules.