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EPW files for locations with Winter Time
 
  
 
  
 
 
 
 
 
 
    
        
        asked 3 years ago  
 
 Nathaniel Jones's avatar  
 
 
 
 
    
        
        updated 3 years ago  
 
 Aaron Boranian's avatar  
 
 
 
 
 
There are a few locations where, rather than setting clocks forward for Daylight Saving Time in the summer, the clocks are set back for Winter Time in the winter. What is the convention for the EPW file time zone flag in these cases?
 
I recently used an EPW file for Dublin, Ireland, and found that it lists the GMT offset as 0, when the standard (summer) time in Ireland is actually GMT+1. This breaks compatibility with time zone aware system libraries (e.g. Python's tzinfo). Is there any advice on how to correct for this?
 
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        answered 3 years ago  
 
 lklawrie's avatar  
 
 
 
 
 
The EPW files always list in "standard time".  Programs may list the politicat DST/Daylight Saving Time and shift the times forward/backward/whatever
 
 
Linda
 
FIBPSA, FASHRAE
https://climate.onebuilding.org - free repository of climate data for building simulation
Climate.onebuilding is a FREE service not supported by any outside organization or government agency.
 
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In that case, there seems to be a bug in the Dublin EPW file. Ireland has "standard time" when most European countries are in DST, and "winter time" when others are in standard time, so the offset listed in the EPW first line is not its standard time.
Nathaniel Jones's avatar
                        Nathaniel Jones
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        3 years ago
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        Asked:  3 years ago  
 
 
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        Last updated: Apr 05 '22 
 
 
 
 
 
 
 
 
 
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