polska: Friday

Evidence: 100 • authority: 72

Friday is the day of the week between Thursday and Saturday. In countries adopting the "Monday-first" convention it is the fifth day of the week. In countries that adopt the "Sunday-first" convention, it is the sixth day of the week. In most Western countries, Friday is the fifth and final day of the working week. In some other countries, Friday is the first day of the weekend, followed by Saturday. In Israel, Friday is the sixth day of the week. In Iran, Friday is the last day of the weekend, with Saturday as the first day of the working week.

Evidence: — • authority: 72

Thursday is the day of the week between Wednesday and Friday. According to the ISO 8601 international standard, it is the fourth day of the week. In countries which adopt the "Sunday-first" convention, it is the fifth day of the week.

Evidence: — • authority: 72

In a vast number of languages, the names given to the seven days of the week are derived from the names of the seven classical planets which were in turn named after contemporary Hellenistic deities. This system was introduced by the Sumerians and later adopted by the Babylonians from whom the Roman Empire adopted the system during late antiquity. In some other languages, the days are named after corresponding deities of the regional culture. The seven-day week was adopted in early Christianity from the Hebrew calendar, and gradually replaced the Roman internundinum. Eight-day and seven-day weeks existed side-by-side until the Emperor Constantine made the seven-day week official in AD 321;…