Diesel Engine Day
Lviv Polytechnic identifies 23 February as Diesel Engine Day and connects the date to Rudolf Diesel’s patent for the engine in 1893.
Date and recurrence
23 February
This authority record treats the observance as a fixed annual date. The same month and day can be reused unless a stronger source changes the rule.
Scope and status
The verified scope stored for this record is Engineering-history observance tied to Rudolf Diesel’s 1893 patent. The site preserves that boundary and does not infer broader government, global or public-holiday status from the observance name alone.
Also known as
Diesel Engine Day
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Sources
- Lviv Polytechnic National University — Diesel Engine DayUniversity History
Frequently asked questions
When is Diesel Engine Day?
23 February The stored recurrence guidance is: 23 February..
Does Diesel Engine Day fall on the same date every year?
The authority record classifies it as fixed annual, so its month and day are reusable unless stronger evidence changes the rule.
Is Diesel Engine Day an official public holiday?
The authority record verifies it within this scope: Engineering-history observance tied to Rudolf Diesel’s 1893 patent. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when the supporting authority record explicitly does so.
Who established or recognizes Diesel Engine Day?
The stored designation basis is: Lviv Polytechnic identifies 23 February as Diesel Engine Day and connects the date to Rudolf Diesel’s patent for the engine in 1893.. Supporting provenance includes Lviv Polytechnic National University — Diesel Engine Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.
Is Diesel Engine Day international or country-specific?
No single country is assigned to this record in the authority dataset. The source-defined scope is: Engineering-history observance tied to Rudolf Diesel’s 1893 patent. Use that scope rather than assuming worldwide or country-specific status.
How is this page verified?
The factual layer is source-backed and keeps its date rule, scope, provenance and editorial guardrails attached to the authority record. This record was checked on 2026-09-10.
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