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Count down to the recurring November 12 birthday anniversary reference date.
Sun Yat-sen (November 12, 1866 – March 12, 1925) was a Chinese politician, physician, and political philosopher who served as the first provisional president of the Republic of China.
Sun Yat-sen is referred to as the 'Father of the Nation' in the Republic of China due to his instrumental role in the overthrow of the Qing dynasty during the Xinhai Revolution. Sun was the first provisional president of the Republic of China and the first leader of the Kuomintang (Nationalist Party of China).
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This page counts down to the annual birthday anniversary of Sun Yat-sen on November 12. The historical birth date is November 12, 1866, as recorded in the biography published by the Museum of Dr. Sun Yat-sen. The countdown uses the Gregorian calendar date shown by the page; it is a date reference, not a calendar of official ceremonies or local events.
The anniversary label identifies the selected year by subtracting the birth year, 1866, from that year. The timer separately divides the remaining interval into days, hours, minutes, and seconds. A day in this display is a 24-hour portion of the remaining time, so it can differ from counting calendar squares on a wall calendar. For example, a display with 2 days, 5 hours, and 10 minutes means that the target time is a little more than two full days away.
When the page first opens, it selects the next November 12 anniversary. The date is observed each year on the same month and day; the anniversary number advances with the selected Gregorian year.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Open the countdown and check the displayed anniversary year and November 12 date. The default is the next occurrence.
Use the year controls to move to another anniversary. The target date, anniversary label, and countdown update together.
If you want a reminder, use the calendar action for the currently selected year. Check the year before saving; the action represents that selected occurrence.
On November 12 itself, the page shows an anniversary-day message. If you select a past year, it marks that anniversary as passed and offers a control to view the next one.
Use cases
See how the tool fits into real work and everyday tasks.
Students and educators assembling a modern history timeline can use the page to see how soon the recurring birthday date arrives, then consult historical sources separately for context.
A reader preparing a discussion, reading list, or commemorative post can select a year and save November 12 to a calendar as a planning prompt. The saved date does not provide event details.
Q&A
Find concise answers to common questions and confusing cases.
It is November 12. The Museum of Dr. Sun Yat-sen records November 12, 1866 as his birth date, and this countdown repeats that month and day each year.
It breaks the time remaining to the target into full 24-hour days and the remaining hours, minutes, and seconds. The smaller units change as time passes.
Yes. Select that anniversary year to see its passed status; use the next-anniversary control to move forward. The default view advances to the next November 12 after the current date has passed.
Notes
Review scope, result limitations, and important precautions before use.
The timer uses the device's current clock and local time zone to interpret November 12. A device with an incorrect date, time, or time-zone setting can therefore show a misleading interval, and people in different time zones may see different hours remaining. The display is a countdown to a date, not a statement about whether a ceremony, public holiday, museum program, or other event is scheduled in your location. Confirm such arrangements with the relevant organizer.
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