To everyone born on 29th February... Since you can't have a proper #birthday this year, I wish you A Very Merry #Unbirthday!

youtube.com/watch?v=RdsZT7WKjW…

#leapYear #29February

Google's cute doodle for the Leap Day (29th February) 2024.

WHAT IS A LEAP DAY/YEAR?🤔🧐
Common/Calendar Year (y)=365 solar days 🗓
Solar/Tropical/Astronomical Year (Y)=365.2425 solar days🌏🌞
Y-y=0.2425; 4*(Y-y)=0.97=1-0.03 (+1 if divisible by 4)
100*(Y-y)=24.25=(25-1)+0.25 (again -1 if divisible by 100)
400*(Y-y)=97=4*(25-1)+1 (again +1 if divisible by 400)

That is to say,
Using logical and modulo operators, the year n is said to be a leap year if and only if:
(n mod 4=0)∧((n mod 100≠0)∨(n mod 400=0)).

In other words, a year is a leap year if it is evenly divisibly 4, except for years that are evenly divisible by 100 but not evenly divisible by 400.

For example, 2024 and 2028 are leap years; 2100 and 2200 are not, but 2400 and 2800 are.

This is our clever method to ensure that our calendar stays aligned with our seasons or Earth's orbit over time. If nothing were done about this discrepancy, our calendar would slowly drift out of sync with the Earth's orbit and seasons. After 100 years, we would be off by about 25 days! So, to fix this, we add an extra day, February 29, to the calendar every four years, with the exception that a year evenly divisible by 100 is not a leap year unless it is also evenly divisible by 400 (as shown in the calculations).

#LeapDay #LeapYear #Feb29 #February29 #29Feb #29February #ExtraDay #February #Earth #Sun #SolarYear #SolarDay #Astronomy #Calendar #CommonYear #CalendarYear #TropicalYear #AstronomicalYear #Season #Seasons #EarthOrbit #OrbitEarth #Year #Discrepancy #Discrepancies #Synchronization

The 'Daily Almanac' wire feature was enjoying the 29 February birthdays.

#LeapDay #29February #February29

February 29 only occurs in years which are evenly divisible by four, although it's not quite that simple. Century years, eg 1800, 1900 are not leap years, unless unless it is also evenly divisible by 400. So just to confuse everyone, the year 2000 was a leap year.

10 facts about Leap Days:

https://topicaltens.blogspot.com/2016/02/29th-february-leap-day.html

#LeapDay #leapyear #29February #February29

In 1288, a law came into effect in Scotland whereby it became a crime for a man to refuse to marry a woman who made a proposal to him. If he refused, he was required to pay a fine.

Happy Leap Day! 10 weird and wonderful things which happened on 29 February:

https://topicaltens.blogspot.com/2024/02/29-february.html

#onthisday #ThisDayInHistory #OnThisDate #29February #February29 #LeapDay #LeapYear

We made this video to promote the #NewTradition called #CaperDay which falls on #29February - only a month away! Are you doing anything to mark the occasion? #RedCuthbertMorris will be morris dancing in one of our local pubs!

Any feedback on the attempt at a meaningful alt text on the video would be welcome before we post any other video on here 🙂

#FolkLife #MorrisDance #MorrisDancing #BorderMorris #FolkDance