˙Monday

Monday is the day of the week between Sunday and Tuesday. According to the traditional Christian, Islamic and Hebrew calendars, it is the second day of the week, and according to international standard ISO 8601 it is the first day of the week. The name of Monday is derived from Old English Mōnandæg and Middle English Monenday, which means "moon day".

˙Tuesday

Tuesday is a day of the week occurring after Monday and before Wednesday. According to some commonly used calendars (esp. in the US), it is the third day of the week. According to international standard ISO 8601, however, it is the second day of the week. The English name is derived from Old English Tiwesdæg and Middle English Tewesday, meaning "Tīw's Day", the day of Tiw or Týr, the god of single combat, victory and heroic glory in Norse mythology. Tiw was equated with Mars in the interpretatio germanica, and the name of the day is a translation of Latin dies Martis.

˙Wednesday

Wednesday is the day of the week following Tuesday and before Thursday. According to international standard ISO 8601 adopted in most western countries it is the third day of the week. In countries that use the Sunday-first convention Wednesday is defined as the fourth day of the week. It is the fourth day of the week in the Judeo-Christian calendar as well, and was defined so in the ancient Mesopotamian and biblical calendars. The name is derived from Old English Wōdnesdæg and Middle English Wednesdei, "day of Woden", ultimately a calque of dies Mercurii "day of Mercury".

Wednesday is in the middle of the common Western five-day workweek that starts on Monday and finishes on Friday.

˙Thursday

Thursday is the day of the week following Wednesday and before Friday. According to the ISO 8601 international standard adopted in most western countries, it is the fourth day of the week. In countries that use the Sunday-first convention, Thursday is defined as the fifth day of the week. It is the fifth day of the week in the Judeo-Christian calendar as well, and was defined so in the ancient Mesopotamian and biblical calendars. The name is derived from Old English Þūnresdæg and Middle English Thuresday, which means "Thor's day".

˙Friday

Friday is the day after Thursday which precedes Saturday. In countries adopting Monday-first conventions as recommended by the international standard ISO 8601, it is the fifth day of the week. It is the sixth day in countries that adopt a Sunday-first convention, as in the Abrahamic tradition. In other countries (see workweek and weekend), Friday is the first day of the weekend, with Saturday the second. In Afghanistan and Iran, Friday is the last day of the weekend, with Saturday as the first day of the working week. Bahrain, the United Arab Emirates (UAE) and Kuwait also followed this convention until they changed to a Friday–Saturday weekend, on 1 September 2006 in Bahrain and UAE,[1] and a year later in Kuwait.[2] In Iran, Friday is the only weekend day.

˙Saturday

Saturday is the day of the week following Friday and preceding Sunday. Saturday is the seventh and therefore last day of the week according to many commonly used calendars, and it is the second-to-last (sixth) day of the week according to ISO 8601 (see below). The Romans named Saturday dies Saturni ("Saturn's Day") no later than the 2nd century for the planet Saturn, which controlled the first hour of that day, according to Vettius Valens. When the day's name was introduced into English and other Germanic languages, however, the name was selected as a calque of the god Saturn, after whom the planet was named. The name was introduced into English no later than the tenth century, when the day was referred to as "Sæternes dæge" in an Old English translation of Bede's Ecclesiastical History of the English People.[1] In Old English, the name was sunnanæfen ("sun" + "eve").

˙Sunday

Sunday is the day of the week following Saturday but before Monday. For most Christians, Sunday is observed as a day of worship and rest, holding it as the Lord's Day, the day of Christ's resurrection. Sunday is a day of rest in most Western countries, part of 'the weekend'. In some Muslim countries, Sunday is a normal working day whereas Friday is the day of rest and prayer. According to the Hebrew calendars and traditional Christian calendars, Sunday is the first day of the week, and according to the International Organization for Standardization ISO 8601 Sunday is the seventh and last day of the week. No century in the Gregorian calendar starts on a Sunday, whether its first year is '00 or '01.[1] The Jewish New Year never falls on a Sunday. (The rules of the Hebrew calendar are designed such that the first day of Rosh Hashanah will never occur on the first, fourth, or sixth day of the Jewish week; i.e., Sunday, Wednesday, or Friday).