The big ones burn for as much as two years. People buy candles on special occasions for good luck. I guess the bigger the candle, the more luck or the longer the luck lasts. Underneath the fancy chinese figures, each of the largest candles had a company name on it. I thought at first it was the name of the company that made the candles but each candle had a different name.
Companies too can buy candles for luck.
I noticed calendars in almost every room in the temple. Some rooms had as many as 15 calendars. They were the kind that businesses selling car parts, linoleum, etc. give out for free. Some were the pull off a day at a time type, others had one or two months below the advertisement. Almost every calendar was up to date except some of the pull-off kinds were a day behind.