See the observances and verified observance-history milestones attached to December 14. Each observance keeps its own source and date details.
Selected observance milestones connected to this date, based on reviewed sources.
The resolution explicitly says the Day is to be observed annually beginning in 2025; it also designated a high-level plenary on 18 December 2025 as part of activities marking the…
The UN Digital Library records A/RES/77/161 as adopted without a vote on 14 December 2022.
Exact action/adoption date of the establishing instrument in the reviewed institutional/legal source.
The official legal record dates Law No. 509-IV to December 14, 2011.
Official BEE and Ministry of Power material states that the first National Energy Conservation Awards were presented on 14 December 1991, which was declared National Energy Conser…
Exact action/adoption date of the establishing instrument in the reviewed institutional/legal source.
The UN Digital Library records adoption at the 512th plenary meeting on December 14, 1954.
The UN Digital Library records adoption at the 512th plenary meeting on 14 December 1954.
A/RES/80/106
Bangladesh government rules list Martyred Intellectuals Day on December 14 among national days connected with the Liberation War.
National Day Calendar lists National Alabama Day on 14 December as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Un…
India’s Bureau of Energy Efficiency states that December 14 was declared National Energy Conservation Day and that the annual awards function is organized on December 14 each year.
A/RES/80/106
Bangladesh government rules list Martyred Intellectuals Day on December 14 among national days connected with the Liberation War.
National Day Calendar lists National Alabama Day on 14 December as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Un…
India’s Bureau of Energy Efficiency states that December 14 was declared National Energy Conservation Day and that the annual awards function is organized on December 14 each year.
This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.
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