> 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 dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` 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 optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.