--- title: Days, weeks and months — a lesson of Mova's school · trees and pragmatics description: «Days, weeks and months», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: A week has 7 days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Days, weeks and months # Days, weeks and months Lesson 111 of the world course of Mova's primary school: 22 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/111-days-weeks-and-months/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/0/) — A week has 7 days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/1/) — Many weekday names come from the sky: Sunday from the Sun, Monday from the Moon, Saturday from the planet Saturn. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/2/) — Months are a bit longer than 4 weeks. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/3/) — Most have 30 or 31 days, while 4 weeks is only 28. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/4/) — That is why a year is not 12 × 4 = 48 weeks but 52 weeks and 1 day: 52 × 7 = 364, plus 1 makes 365. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/5/) — Two old tricks tell you how long each month is. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/6/) — The rhyme: "Thirty days hath September, April, June and November" ("hath" is old English for "has"), all the rest have 31 except February. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/7/) — And the knuckle trick: make two fists and count the months along the knuckles and the dips between them; knuckle months have 31 days, dip months fewer, and July and August sit on two knuckles side by side. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/8/) — Why 7 days in a week? - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/9/) — There are several reasons and nobody is completely sure: the ancient Babylonians used it, the Bible tells of 7 days, people could see 7 objects moving in the sky (the Sun, the Moon and five planets), and the Moon changes from new to half to full in roughly 7-day steps. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/10/) — Time words help plan: a "fortnight" is 14 days, and "every other Thursday" means every second Thursday, 14 days apart. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/11/) — A week has 7 days, and a normal year has 52 weeks and 1 day, which is 365 days. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/12/) — 4 weeks is 28 days, but most months have 30 or 31 days, so a year is not 48 weeks. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/13/) — September, April, June and November have 30 days; January, March, May, July, August, October and December have 31. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/14/) — February has 28 days, or 29 in a leap year. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/15/) — In the knuckle trick, months that land on a knuckle have 31 days, and months that land in a dip have fewer. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/16/) — Weekdays are Monday to Friday; in Britain, the USA and most countries the weekend is Saturday and Sunday. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/18/) — The day after the day after Tuesday is Thursday. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/19/) — June has only 30 days, so there is no 31 June; the day after 30 June is 1 July. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/20/) — A fortnight is 14 days; the word comes from old English "fourteen nights", and a date a fortnight later falls on the same weekday. - [22](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/22/) — The 7-day week has several possible origins, including ancient Babylon, the Bible's 7 days, the 7 moving objects people could see in the sky, and the Moon's phases about a week apart. - [23](https://md.mova.elamur.ai/free/en/corpora/school/world/111-days-weeks-and-months/23/) — Words people use: "close but no cigar" means nearly right but wrong, "bins" means rubbish collection (UK), "bairn" means child, "aye" means yes, "ken" means know and "dinnae" means don't (Scotland). - ← previous: [Why time flies and why it drags](https://md.mova.elamur.ai/free/en/corpora/school/world/110-why-time-flies-and-why-it-drags/) - next →: [Leap years and 29 February birthdays](https://md.mova.elamur.ai/free/en/corpora/school/world/112-leap-years-and-29-february-birthdays/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)