> For the complete documentation index, see [llms.txt](https://docs.betterbuilding.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betterbuilding.io/user-guide/workflows/energy-efficiency/j1v5-verification-using-a-reference-building-for-a-class-2-sole-occupancy-unit/j1v5-lighting-schedules.md). # J1V5 Lighting Schedules Lighting schedules refer to time-based patterns that describe the operational characteristics of the daytime ([Table S45C3e](#table-s45c3e-lighting-schedules-for-daytime-zones)) and night-time ([Table S45C3f](#table-s45c3f-lighting-schedules-for-night-time-zones)) zones. For J1V5 modelling, these are referred to within S45C3 (1)(m), and use the stated Internal Loads in S45C3 (1)(L). ## Lighting Schedules ### Table S45C3e Lighting schedules for daytime zones | Time period (local standard time) | December to February | June to August | March to May, September to November | | --------------------------------- | -------------------- | -------------- | ----------------------------------- | | 12:00 am to 1:00 am | 0% | 0% | 0% | | 1:00 am to 2:00 am | 0% | 0% | 0% | | 2:00 am to 3:00 am | 0% | 0% | 0% | | 3:00 am to 4:00 am | 0% | 0% | 0% | | 4:00 am to 5:00 am | 0% | 0% | 0% | | 5:00 am to 6:00 am | 0% | 0% | 0% | | 6:00 am to 7:00 am | 5% | 10% | 5% | | 7:00 am to 8:00 am | 5% | 10% | 5% | | 8:00 am to 9:00 am | 0% | 0% | 0% | | 9:00 am to 10:00 am | 0% | 0% | 0% | | 10:00 am to 11:00 am | 0% | 0% | 0% | | 11:00 am to 12:00 pm | 0% | 0% | 0% | | 12:00 pm to 1:00 pm | 0% | 0% | 0% | | 1:00 pm to 2:00 pm | 0% | 0% | 0% | | 2:00 pm to 3:00 pm | 0% | 0% | 0% | | 3:00 pm to 4:00 pm | 0% | 0% | 0% | | 4:00 pm to 5:00 pm | 5% | 5% | 5% | | 5:00 pm to 6:00 pm | 15% | 20% | 20% | | 6:00 pm to 7:00 pm | 25% | 30% | 25% | | 7:00 pm to 8:00 pm | 30% | 35% | 30% | | 8:00 pm to 9:00 pm | 25% | 30% | 30% | | 9:00 pm to 10:00 pm | 20% | 25% | 25% | | 10:00 pm to 11:00 pm | 10% | 15% | 15% | | 11:00 pm to 12:00 am | 0% | 0% | 0% | Table S45C3e shows the percentage of lighting usage during various time periods throughout the day and across different seasons in local standard time. ### Table S45C3f Lighting schedules for night-time zones | Time period (local standard time) | December to February | June to August | March to May, September to November | | --------------------------------- | -------------------- | -------------- | ----------------------------------- | | 12:00 am to 1:00 am | 0% | 0% | 0% | | 1:00 am to 2:00 am | 0% | 0% | 0% | | 2:00 am to 3:00 am | 0% | 0% | 0% | | 3:00 am to 4:00 am | 0% | 0% | 0% | | 4:00 am to 5:00 am | 0% | 0% | 0% | | 5:00 am to 6:00 am | 0% | 0% | 0% | | 6:00 am to 7:00 am | 5% | 10% | 5% | | 7:00 am to 8:00 am | 5% | 10% | 5% | | 8:00 am to 9:00 am | 0% | 0% | 0% | | 9:00 am to 10:00 am | 0% | 0% | 0% | | 10:00 am to 11:00 am | 0% | 0% | 0% | | 11:00 am to 12:00 pm | 0% | 0% | 0% | | 12:00 pm to 1:00 pm | 0% | 0% | 0% | | 1:00 pm to 2:00 pm | 0% | 0% | 0% | | 2:00 pm to 3:00 pm | 0% | 0% | 0% | | 3:00 pm to 4:00 pm | 0% | 0% | 0% | | 4:00 pm to 5:00 pm | 0% | 0% | 0% | | 5:00 pm to 6:00 pm | 15% | 20% | 20% | | 6:00 pm to 7:00 pm | 25% | 30% | 25% | | 7:00 pm to 8:00 pm | 30% | 35% | 30% | | 8:00 pm to 9:00 pm | 25% | 30% | 30% | | 9:00 pm to 10:00 pm | 20% | 25% | 25% | | 10:00 pm to 11:00 pm | 10% | 15% | 10% | | 11:00 pm to 12:00 am | 0% | 0% | 0% | Table S45C3f shows the percentage of lighting usage during various time periods in night-time zones across different seasons in local standard time. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.betterbuilding.io/user-guide/workflows/energy-efficiency/j1v5-verification-using-a-reference-building-for-a-class-2-sole-occupancy-unit/j1v5-lighting-schedules.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.