Lmst

Yes yes yes! the document has been edited to the new format I use for timesheet creation and time keeping.
https://github.com/marrie/TimeSheetCreationAndHowTo
#timeKeeping

I'm going to talk about calendars again.

Web pages and popualr books often state that calendars can be solar or lunar, and lunisolar calendars combine both types. This is exactly backwards. Every polity with any sort of state-like organisation starts off with a lunisolar calendar, which may drop the lunar correlation to become purley solar. (There is only one purely lunar calendar, and it too is descended from a lunisolar ancestor).

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#Calendars #timekeeping

Unironically I love reforms like this, though

https://piefed.social/c/historymemes/p/1805447/unironically-i-love-reforms-like-this-though

To those who observe, you are marked on #AshWednesday with a cross of #hope, not just #repentance. May you find grace in your Lenten #fast.

Western Christians begin #Lent February 18, 2026.
Orthodox Christians begin #GreatLent February 23, 2026.
Both count back from their #Easter date, but each uses a different calendar to approximate te #vernalequinox (Gregorian vs. Julian)

painting, Ash Wednesday by Charles de Groux, 1866, courtesy Stedelijk Museum Wuyts-Van Campen en Baron Caroly (#136776), Lier, Belgium

#Calendar #histsci #astronomy #equinox #timekeeping

A somber 19th‑century interior scene of a church or chapel where people stand in a quiet line. At the center, an elderly, stooped man in a long beige coat leans on a cane and approaches a priest in white robes, who stands behind a dark wooden railing and reaches out a hand offering ashes. Around them, several women and children in dark, modest clothing watch, including a little girl in a red hooded cape who stands beside a taller woman in a gray dress on the right; both have ashes on their foreheads. The background is filled with wooden paneling and columns, and the floor is patterned with black‑and‑white tiles, giving the painting a subdued, devotional atmosphere.

To those who celebrate, whether you say #MardiGras or #ShroveTuesday, remember #Lent is coming.

#Food traditions, like #pancake suppers, consume eggs, sugar, and fat that were forbidden during Lent and might otherwise have been wasted.

The Fight Between #Carnival and Lent by Pieter Brueghel the Elder in 1559, courtesy Kunsthistorisches Museum (GG_1016)

#Calendar #Timekeeping #History

A densely packed 16th‑century village carnival scene in a town square, shown from above. Dozens of small, brightly dressed figures crowd the muddy open space between brick houses and a large gray church on the right. People eat, drink, play games, dance, wrestle, and parade in costume. In the lower center, a man in colorful clothes rides two large beer barrels, while nearby others cook over a fire and sell food from stalls. At the bottom right, a figure dressed as a mock king in pale blue robes sits on a small wheeled platform surrounded by revelers. Scattered props—buckets, masks, musical instruments, benches, and carts—dot the square, and background streets and buildings are filled with more people watching or joining the festivities, creating a busy, chaotic festival atmosphere.

Ancient Chinese Art of Time and Scent.
The Xiāng Zhuàn incense seal is a satisfying way of blending fragrance and timekeeping.
China's calm way to track hours.
@xmuse_ #globamuseum #incense #Chineseart #timekeeping

23/25 🧵 Wittgenstein would say: "The limits of my train schedule are the limits of my world." If the train from Frankfurt (Oder) is on time, the logic of the end is preserved. We don't need a moral compass when we have a synchronized watch and a Russian accent. #Wittgenstein #Timekeeping

To those who celebrate, may you receive the gift of wisdom. Blessings at #Epiphany.

Sally Bosken told me all #astronomers had to have a #starofbethlehem speech ready. Thanks to her, I do.

#calendar #timekeeping #seasonoflight #12daysofchristmas #astronomy #histsci
detail from "Mary and Child, surrounded by angels" by "Master of Sant'Apollinare", photograph by N. A. Thune (CC-BY-SA 2.5), courtesy Wikimedia Commons

3 men richly dressed in tunics, hose, shoes, cloaks, and peaked red hats offer gifts. The one farthest to the right has white hair and a beard. The one farthest to the left has black hair and a beard. The middle is beardless with brown hair. In the background, green palm trees stand out against a golden sky and the names Balthasar, Melchior, and Gaspar. A small 8 point star is in the upper right. At their feet, there is a carpet of green grass with some flowers and shrubs. At the very bottom is a geometric boarder.

Nobody: "..."

Me: "MATH!!!!!!"

#FFXIV #FinalFantasyXIV #Etheirys #WorldBuilding #Lore #Math #TabletopRPG #Timekeeping #Eorzea #Geeky #LoreHunting

A dark-themed educational graphic titled "Equivalence Equations for Second, Minute, Bell, Sun, Week, and Moon." The text explains the mathematical link between isochronal measurement units of Etheirys and Earth. The units for Etheirys (second, minute, bell, and sun) are marked with a carrot emoji and mapped congruently to Earth units (subscript R). Below the text, a set of algebraic equivalence equations shows that an Etheiryan week equals 8 suns, and an Etheiryan moon equals 4 weeks or 32 suns.

Clock Synchronization Is a Nightmare

https://arpitbhayani.me/blogs/clock-sync-nightmare/

#HackerNews #ClockSynchronization #Nightmare #TechBlog #Timekeeping #Challenges

Tom’s Hardware: NIST warns several of its Internet Time Service servers may be inaccurate due to a power outage — Boulder servers ‘no longer have an accurate time reference’ . “The National Institute of Standards and Technology has warned that several of its Internet Time Service servers could be providing inaccurate time following a failure of the primary atomic time scale, NIST-F4, at its […]

https://rbfirehose.com/2025/12/25/toms-hardware-nist-warns-several-of-its-internet-time-service-servers-may-be-inaccurate-due-to-a-power-outage-boulder-servers-no-longer-have-an-accurate-time-reference/

"NIST's NTP clock was microseconds from disaster"

#TimeKeeping #NIST #NTP #GPS #GNSS #AtomicClock

https://www.youtube.com/watch?v=ZRB7pjRVVkI

For those who celebrate, wishing you joy & light throughout the longest night. #wintersolstice blessings

Angle of rays, length of days are the reasons for the seasons
as shown in these #NASAScience solar reflectance maps

maps credit: T. Wong & CERES Science Team, NASA Langley (public domain) via Wikimedia Commons

#SeasonofLight #calendar #timekeeping #astronomy #winter #Sun #solstice #heliophysics

Two images of the Earth. The upper shows the reflected solar radiation on the winter solstice 2004 with the most light reflected in the southern polar region and the least in the northern polar region. The lower shows the reflected solar radiation on the summer solstice 2005 with the most light reflected in the northern polar region and the least in the southern polar region. In both images, the mid-latitudes show a complex gradient of swirling reflected solar radiance depending on latitude and surface conditions.

The December solstice — beginning of winter in the northern hemisphere & summer in the southern — was a few minutes ago, at 10:01 EST (15:01 GMT). Enjoy your winter & summer. ;)

H/t Guy Ottewell, as always. #winter #summer #seasons #solstice #astronomy #timekeeping

For those who celebrate, Io, Saturnalia!

Running from December 17 to ~23, #Saturnalia celebrated a #Roman Golden Age, when #Saturnus ( #Saturn) ruled & taught his people #argriculture and civilized behavior, by reversing the normal social order.

#SeasonofLight #calendars #timekeeping #Rome #history
photograph by Carole Raddato 2015 CC-BY-SA 2.0 via Flickr

still life photograph of a bronze head of a bearded man with curly hair wears a red cap surrounded by evergreens with red berries, two cards displaying a painting of a man wearing a toga, a pine cone, a lit red candle, an unlit oil lamp, a clay boar, and a clay chicken

For those who celebrate, chag urim sameach. May your Hanukkah and home be full of light.

Hanukkah begins on 25 Kislev and lasts 8 days. Over a 19-year cycle, the Jewish calendar uses variable-month years and variable-length months to achieve both solar and lunar alignment. This year, Kislev has 30 days, so Chanukah ends on 2 Tevet.

The Gregorian calendar is only aligned with solar cycles. This year, 25 Kislev began at sunset on 14 December and runs until sunset on 22 December.

#SeasonofLight #Hanukkah #Chanukah #calendars #timekeeping #astronomy

Illumination from 1300s Spanish Bible showing menorah against red and blue checkered background with writing around the edges

For those who celebrate, may #Advent strengthen your heart with patience and joy.

Advent is season of preparation for #Christmas.
Early Christians may have associated Jesus' conception and death with the #VernalEquinox, making the #WinterSolstice His birthday.

#SeasonofLight #calendars #timekeeping #Astronomy

candelabra with circular base holding three purple candles and one pink candle with a thicker white pillar candle in the center. Two of the purple and the pink candles are lit. A wreath of pine branches lies among the candles. The background wooden screen topped with more pine branches is in the background.

Kỹ sư web chia sẻ nỗi khổ "cày giờ" với bảng chấm công mỗi cuối tuần: mất 30-50 phút "dọn dẹp" lịch sử Git để tạo bảng giờ "chuyên nghiệp" 8 tiếng. Dù mệt mỏi, anh đã tạo LogHacker (sử dụng AI tự động hóa bảng giờ từ log). Dự án đang kêu gọi 100 email đăng ký để xác minh nhu cầu thực tế. #KỹThuật #AI #ThờiGian #SángTạo #LậpTrình #devlife #aibusiness #timekeeping

(NONE)

https://www.reddit.com/r/SideProject/comments/1pihoih/i_hate_time_logging_maybe_you_do_too/

Does anyone know what time it is?

Time is a human construction.

Clocks were invented so you knew when the pub opened.

https://www.youtube.com/watch?v=pc2fLhFlh4g

#TimeKeeping

AI World Clocks

https://clocks.brianmoore.com/

#HackerNews #AI #World #Clocks #AI #Technology #Innovation #Timekeeping #Global #Collaboration

#timekeeping

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