Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
If you're also running design days, then EnergyPlus (the simulation engine that OpenStudio Application is an interface for) will simulate those before using EPW weather data for the annual simulation. On the Site tab in OpenStudio Application, you can find the design days near the bottom. This would explain why you see a "time shift" for equal outdoor air drybulb values between the EPW file and output from OpenStudio occuring on different days.
See a post here for more details.
