Year in Progress

How the percentage is worked out

The headline figure is the day of the year divided by the number of days in the year, and both halves are computed rather than assumed. The day of the year is the difference between today and the first of January in whole days. The length of the year asks the calendar: 366 in a leap year, 365 otherwise, with the leap rule applied in full — divisible by four, except centuries, except centuries divisible by four hundred. So 2100 will be 365 days here and 2000 was 366.

The week number is the day of the year divided by seven and rounded up, which makes the first of January week one and the thirty-first of December week fifty-three. That is a plain division rather than the ISO week-numbering standard, which starts weeks on Monday and can put the first days of January in the last week of the previous year — worth knowing if you are comparing this figure against a spreadsheet that uses ISO weeks. Weeks remaining rounds the other way, down, so it never promises a week that is only part there.

The month bars are the same division applied to each month in turn: a month behind you reads 100 per cent, a month ahead reads nothing, and the current month reads the day of the month over the days that month actually has. Remaining weekends counts the Saturdays left in the year, one per weekend. The ring around the percentage is drawn as a stroke on a circle of radius 88, so its full circumference of about 553 pixels is the length the percentage is measured against.

Nothing on this site is medically reviewed. Every figure above was read out of the code that runs on this page, and where a number is our own judgement rather than a published one, the note says so and cites nothing. Method last checked 21 August 2026.