Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
This is a generic answer to your question, not OpenStudio specific. The National Research Council of Canada has a website that lists the sunrise/sunset times for every day of the year for many cities.
http://www.nrc-cnrc.gc.ca/eng/services/sunrise/advanced.html
The text version provides Nautical and Civil Twilight Start, Nautical and Civil Twilight End. I use Civil Start/End as the turn on/turn off times. I construct an hourly schedule, one for each month of the year using the average for each month and apply that schedule to the calculated exterior lighting kW.
