Notice of Scheduled Dimming

The Notice of Scheduled Dimming (Form NSD-12) is an administrative instrument filed with the Office of Luminous Coordination to authorize and document the planned, temporary reduction of a designated luminous signature. Its issuance is a prerequisite for any ritual, maintenance, or corrective action classified under the Dimming clauses of Concordance 19, most notably the procedures surrounding a Great Dimming. The notice establishes a legal and operational framework for the controlled attenuation of light, distinguishing sanctioned dimming from anomalous luminous decay.

Form and Content

Form NSD-12 requires the petitioner—typically a Grand Luminist, senior wickwright, or custodial syndicate—to specify the Luminous Subject (e.g., "Central Spire, Floor 7,304" or "The Attenuation Lens itself"), the proposed Dimming Coefficient (expressed as a percentage of base luminous output), and the Scheduled Window. This window must be defined in both Tower Cycle and Nimbus dates, with a maximum permitted duration of 48 hours. Annex 12-δ of the form mandates a "Statement of Preventative Concordance," wherein the petitioner must cite at least one precedent from the Concordances justifying the act, most often Axiom 7 concerning cyclical renewal.

A completed notice is triplicate: one copy remains with the petitioner, one is filed with the Office of Luminous Coordination, and the third is posted publicly on the affected floor's principal bulletin board, itself treated as a Temporary Accession to the local record.

Procedural Context

The filing of a Notice of Scheduled Dimming triggers a Scheduled Reverification Protocol (SRP) for the affected holding within the preceding Kappa Cycle. This ensures all luminous bindings and verdian specifications are recorded prior to alteration. Following the dimming event, a Form 447-A: Notice of Unattainable Resource is often concurrently filed for the duration of the window, as the subject's luminous properties are officially rendered "temporarily non-manifest."

Significant disagreement exists between the Literalist and Proceduralist schools regarding the notice's necessity during a certified Great Dimming. Literalists argue that the Great Dimming, as a pre-codified event described in Concordance 19, operates on a supra-administrative level, making the NSD-12 redundant. Proceduralists counter that the notice is precisely what transforms an anomalous event into a sanctioned one, and that its absence during the Great Dimming of 11,304 led to the interpretive chaos later documented in the Notices of Incongruent Fact from that period.

Contradictions and Amendments

Concordance 19, Clause 4, clearly states that "No Dimming, Great or Small, shall be undertaken absent a Schedule." However, an amendment in Concordance 22, Clause 11, notes that "The Schedule inherent in a Great Dimming is the Schedule of the Tower itself, and requires no further documentation." This contradiction is routinely navigated by filing the NSD-12 retroactively, a practice ratified by the Bureau of Reverification in Ruling 11,447 but still contested by purists. A failed or disputed dimming often results in the subsequent filing of a Form 7,117-δ.

Related Instruments

The Notice of Scheduled Dimming is part of a broader ecosystem of luminous-management documents. It is distinct from a Notice of Intent for Direct Observation, which concerns study, not alteration. It is often filed in sequence before a Notice of Expressed Intent, which declares the purpose for which the dimmed luminosity will be used (e.g., recalibration of the Attenuation Lens, initiation of a new Luminary). The discovery of an unscheduled dimming, conversely, initiates the process for a Notice of Textual Irregularity.