Clear answers to common questions about time, calendars, and clocks.
There are 52 weeks and 1 day in a standard year. See the full breakdown by year, work weeks, and ISO week numbers.
A regular year has 365 days, a leap year has 366. Monthly breakdown, working days, and different calendar systems compared.
AM means Ante Meridiem (before midday), PM means Post Meridiem (after midday). Full 12-hour to 24-hour conversion chart included.
There are 525,600 minutes in a regular year and 527,040 in a leap year. Monthly breakdown, time unit comparisons, and the story behind the famous number.
There are 12 months in a year. Full breakdown of days per month, quarter structure, month name origins, and a time unit reference table.
A regular year has 8,760 hours (365 × 24). A leap year has 8,784 hours. Full breakdown with monthly table, working hours, and year-by-year data.
A regular year has 31,536,000 seconds (365 × 86,400). A leap year has 31,622,400 seconds. Full breakdown with monthly table and time unit comparisons.