I often smell a burnt candle at around between midnight and 2: A.M... now I smell it for 15 min at around 10:30 am -11 am. What does it mean?

It is said that the smell of sulphur can be the presence of a bad spirit.however,this smell is more associated with burning matches than candles.Without meaning to cause you concern,maybe you should visit your doctor if it keeps happening,to rule out any medical issues.I have smelt sulphur from time to time myself.not burning candles though.

Usually,the most apparent time for spirit activity is around 3am,but I personally find it to be all times.