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Important dates
Stories about important dates from the Daytely blog.
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Important dates

The Important Annual Dates Worth Reviewing Once a Year
Review the annual dates that protect your relationships, home, health, documents and digital life with one calm yearly check-in.
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How Far in Advance Should You Set a Reminder?
Choose useful reminder timing for birthdays, appointments, renewals, travel and everyday tasks with a simple action-based method.
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All-Day Events vs Timed Reminders: Which One Should You Use?
Choose between an all-day date and an exact-time reminder by asking whether the day matters, the clock matters, or both do.
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What Is an Annual Reminder? Meaning, Examples and Uses
An annual reminder repeats once each year. See practical and personal examples, how it differs from an anniversary, and when to use one.
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Days Since a Date: A Simple Way to Measure a Milestone
Use a days-since count to notice progress and personal milestones without turning every meaningful experience into a competition.
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How to Count Weeks and Months Between Two Dates
Count complete weeks and calendar months between dates without losing partial weeks or being misled by unequal month lengths.
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How to Add or Subtract Days From Any Date
Add or subtract days from any date accurately, including across month ends, year changes and leap years.
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Calendar Days vs Business Days: What Counts and When?
Understand the difference between calendar days and business days, with clear examples for deadlines, deliveries and appointments.
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What Date Is 30, 60 or 90 Days From Today?
Find a date 30, 60 or 90 days ahead and turn a vague future window into a practical plan for follow-ups, renewals and goals.
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How to Calculate the Number of Days Between Two Dates
Learn how to count the days between two dates, when to include the start or end date, and how leap years affect the answer.
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Neil Armstrong’s birthday and the date people first walked on the Moon
Born on 5 August 1930, Neil Armstrong was an engineer and test pilot before commanding Apollo 11’s first human lunar landing.
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United Nations Day: what happened on 24 October 1945
United Nations Day marks the date in 1945 when the UN Charter entered into force and the organization officially came into existence.
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World Water Day: why 22 March belongs on the calendar
Observed by the United Nations on 22 March, World Water Day focuses attention on safe water, sanitation and shared freshwater systems.
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Human Rights Day and the document remembered on 10 December
Human Rights Day marks the 10 December 1948 adoption of the Universal Declaration of Human Rights and its promise of equal dignity.
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C. V. Raman’s birthday and India’s National Science Day
C. V. Raman was born on 7 November 1888. India marks 28 February for the light-scattering discovery associated with his Nobel Prize.
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International Day of Families: what 15 May can remind us to notice
Observed by the United Nations on 15 May, the day draws attention to the many forms families take and the conditions that help them thrive.
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World Health Day and the anniversary behind 7 April
World Health Day returns on 7 April, the anniversary of the World Health Organization’s founding constitution taking effect in 1948.
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Mahatma Gandhi’s birthday and the meaning of 2 October
Born on 2 October 1869, Mohandas Gandhi left a complex legacy that made the date a global invitation to consider nonviolence.
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Mother Teresa’s birthday and a life remembered through service
Born on 26 August 1910, Mother Teresa became internationally known for religious service among people experiencing poverty and illness.
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International Women’s Day: the story behind 8 March
The date grew from labour and voting-rights movements and remains a day for celebrating progress while confronting inequality.
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Earth Day on 22 April: how one date grew around the world
22 April has carried environmental attention since the 1970s and is now also observed by the United Nations as International Mother Earth Day.
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Martin Luther King Jr.’s birthday and a legacy of nonviolence
15 January offers a date for studying a life, a movement and the unfinished work behind a familiar public memory.
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Why the International Day of Peace is marked on 21 September
A shared day cannot create peace alone, but it can make room for learning, reflection and practical acts of nonviolence.
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Marie Curie’s birthday and a life of scientific firsts
Born on 7 November 1867, Marie Curie is remembered for discoveries, persistence and a scientific life that crossed borders.
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Nelson Mandela’s birthday: a date connected to service
18 July remembers Nelson Mandela’s life and asks a simple question: what can each of us contribute where we are?
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Why do some dates become international days?
A date on the world’s calendar often begins with a shared concern, a public decision and the hope that attention can lead to action.
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