Is a seven day week universal?
Is seven day week universal in all countries?
Why are there seven days in a week? Why there are 7 days in a week? How many days are in a week? Why are there only 7 days in a week? How common are six day workweeks in Israel these days? How many days are in a month? Which countries in the world have 6 months of day and night? What is the most popular week in the year for vacation days in the US? How many hours per week are there? Can you name 3 consecutive days without wednesday, friday, saturday? Why are days of the year biased toward certain days of the week? How soon will the world speak one universal language? Which day of the week is your favourite and why? How many times can one have sex in a week? Is it healthy to fast for one day per week? Why don't all months have same number of days? How many days should you work out during the week? How many times have sex in week? How many daily deals are available on Groupon per day? In a non-leap year, which is greater: the mean number of days per month or the median number of days per month? Which day is the Sabbath day according to Bible? Will earth's year and day be the same? On an average, how many questions are asked in Quora per day? How many questions can you ask on Quora per day? What's the probability that any non-leap year has 53 fridays? Is the universe expanding day by day? Which day is the true sabbath according to Bible? Is there any single point where 7 billion people of the world will agree upon? How many times you do sex in a week? How many hours do you sleep every day?