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#timekeeping
Busy day at Stonehenge as the stones are moved forward one hour
Stonehenge is one of the world's most iconic prehistoric monuments, but did you know that parts of it have been moved in modern times? This fascinating image shows a moment from the 1950s restoration efforts, but with a humorous twist—it almost looks like the stones are being adjusted for daylight saving time! Of course, no one is actually resetting Stonehenge for daylight saving time—but this real historical photo from the 1950s restoration efforts makes it look that way! The Real […]
Homer (not Simpson), Hesiod, and Euripides describe the beginning of Winter as being when the Pleiades, the Hyades, and Orion set just before sunrise, at the same time as Greeks hear crane calls.
When they were writing, this would have happened around the halfway point between the southward equinox and the southern solstice, same as how the Celts and Chinese reckon the seasons.
The Borana group people into age-based and generation-based groups, which are completely independent.
Every eight years, leadership passes to the next generation group in an endless cycle. Historians identify time not by years, which are a little vague in Borana philosophy, but by which generation group was in authority at the time.
Legesse literally wrote and entire book about this, which I got from Anna just for the calendar stuff.
Thank you for reading.
12/12
Today I want to talk about Borana timekeeping. This is hard to do without getting into anthropological controversies, and it's not every day I get to disprove a widely-repeated idea. (I am not the first to disprove it but I did it independently).
1/12
The issue here is that 28 days doesn't match up with any lunar cycles. The synodic month is a shade over 29½ days long, so any timekeeping system that synchronises with the phases of the moon will have months of 29 or 30 days.
The sidereal and draconic months are just over 27 days long; months that synchronise with those moon cycles will occasionally be 28 days long, but will more often have 27 days.
3/12
Polynesians kept time by the moon; each lunar month had a particular name and meaning corresponding to the season in which it fell, but there was no real concept of years until Europeans came along.
The Kiowa appear to have been the opposite. They kept pictorial records of history, with standard symbols to indicate summer and winter, and a picture to represent the most significant event of the season: https://kiowacalendars.org/calendars
How a Leap Second Became a Leap of Faith in Tech Timekeeping
In the world of precise timekeeping, leap seconds can cause chaos. Discover how one sysadmin ingeniously managed to slow down an entire company's infrastructure by a second to avoid the pitfalls of a ...
https://news.lavx.hu/article/how-a-leap-second-became-a-leap-of-faith-in-tech-timekeeping
It's the latest chapter in the long-running debate over whether to scrap the status quo, and over which permanent time would be better. #DaylightSavingTime #DST #Timekeeping #Legislation #Congress #IDontCareJustPickOne https://buff.ly/403Lv2e
For those who celebrate, Habari gani? Ujima (collective work & responsibility).
Happy #Kwanzaa!
Running from Dec. 26-Jan. 1, festival draws on African 1st fruits celebrations.
#Seasons are reversed in northern/southern hemispheres, so #wintersolstice (north) is #summersolstice (south).
#seasonoflight #solstice #timekeeping #calendar
US postage stamp
A Cyberpunk Pocketwatch - For a time, pocketwatches were all the rage, but they were eventually supplanted b... - https://hackaday.com/2024/11/20/a-cyberpunk-pocketwatch/ #pocketwatch #timekeeping #clockhacks #locknwatch #cyberpunk #horology #watch
To those who celebrate, happy #Halloween.
Halloween, or #AllHallowsEve, has its origins in the ancient Celtic festival of #Samhain, which falls halfway between the #autumn #equinox and #winter #solstice.
#astronomy #timekeeping #calendar
image credit T.A. Rector/Univ. AK-Anchorage, H. Schweiker/WIYN & NOIRLab/NSF/AURA (CC BY 4.0)
Repent, Horologist! Said The Tick-Tock Man
https://eldraeverse.com/2024/10/05/repent-horologist-said-the-tick-tock-man/
Today, on the #September #equinox, the #Sun rose due #east and set due #west
At
12:44 UTC
08:44 US EDT
the #Sun crossed the #celestialequator heading #south, beginning of #northernhemispher #autumn (#fall).
#astronomy #calendar #timekeeping #autumnalequinox #septemberequinox
public domain image courtesy of Divad (2010) via Wikimedia Commons
![Illustration shows that the two equinoxes occur at intersections of the Sun's apparent path (the ecliptic) and the projection of the Earth's equator on to the sky (the celestial equator) while the solstices occur when the Sun reaches its maximum southern or northern distance from the celestial equator. The fall equinox is also labeled the first point of Libra while the spring equinox is also called the first point of Aries. [public domain image courtesy of Divad (2010) via Wikimedia Commons]](https://cdn.masto.host/astrodonsocial/media_attachments/files/113/183/880/732/023/499/original/83125b392549800e.png "Illustration shows that the two equinoxes occur at intersections of the Sun's apparent path (the ecliptic) and the projection of the Earth's equator on to the sky (the celestial equator) while the solstices occur when the Sun reaches its maximum southern or northern distance from the celestial equator. The fall equinox is also labeled the first point of Libra while the spring equinox is also called the first point of Aries. [public domain image courtesy of Divad (2010) via Wikimedia Commons]")
1991 Elegant Wristwatch with Minimalist Design
The image displays a wristwatch, which appears to be a brand new Rolex.
It features a black and white color scheme, a prominent silver or metal bracelet, and a matching silver band.
The watch has a date function indicated by the "3" on the dial, which is also visible through the glass back of the case.
The hands and markers are in a contrasting color, likely gold, against the black background of the dial.
The bezel around the watch face appears to be made of metal with a textured pattern.
There's a logo or emblem engraved at the 12 o'clock position on the dial, but it's not clearly legible in the image.
https://nocontext.loener.nl/fullpage/03-March1991-Page-056.png
#photography #illustration #madman #nocontext #sfw #Rolex #wristwatch #luxury #fashion #timekeeping #accessory #watchface #metal #jewelry #strap #bracelet #datefunction #minimalistdesign.
ntpd-rs: A new NTP implementation in Rust
https://github.com/pendulum-project/ntpd-rs
#programming #timekeeping #time #rust #ntp #+
1970 Vintage Watch Advertisement
The image is a black and white advertisement for a vintage watch.
It features an analog clock with Roman numerals, displaying the time as 21 seconds past 7 o'clock.
The brand of the watch is not visible in this text description.
https://nocontext.loener.nl/fullpage/06-June1970-Page-218.png
#photography #illustration #madman #nocontext #sfw #VintageWatch #Advertisement #Timekeeping #RomanNumerals #AnalogClock #BlackandWhitePhotograph.
For those who celebrate, may #light surround you. Happy #summersolstice!
At 4:51 PM US EDT, the #Sun reached its maximum declination, or height above the celestial equator.
#astronomy #SolsticeDay #solstice #calendar #timekeeping
Sun graphic courtesy of Clker-Free-Vector-Images via Pixabay
The Greenwich Time Lady: A family that made their living carrying correct time around London until the 1940s
https://www.bbc.com/news/articles/c4nn7gew9zxo
#timekeeping #greenwich #history #london #clocks #hustle #time #ntp #+