Homage to Salvador Dalí’s famous painting “The Persistence of Memory (1931)”
The time shift results in sunrise and sunset occurring approximately one hour later on the clock than the day before, providing more daylight in the evening and less in the morning.
Start Date: Daylight Saving Time begins on Sunday, March 9, 2025. This is the second Sunday in March, following the schedule established by theEnergy Policy Act of 2005.
Time Change: At 2:00 a.m. local standard time, clocks are set forward one hour to 3:00 a.m. local daylight time. This is often referred to as “springing forward.”
Geographic Scope: Most of the United States observes DST, except for Hawaii and most of Arizona (with the exception of the Navajo Nation, which does observe DST). U.S. territories such as American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands do not participate in DST.
Legal Basis: The rules are governed by the Uniform Time Act of 1966, as amended by the Energy Policy Act of 2005. The U.S. Department of Transportation oversees the implementation, while states and territories have the option to opt out of DST but cannot independently choose to make it permanent without federal approval.
“Time After Time (Cindy Lauper Cover) | University of Delaware
University of Wisconsin Eau Clair
The U.S. power grid operates on a synchronized frequency of 60 Hz, maintained across three major interconnections: Eastern, Western, and Texas. During the Daylight Saving Time (DST) switch—typically at 2:00 AM local time on the second Sunday in March (spring forward) or the first Sunday in November (fall back)—the grid’s synchronization is unaffected because it relies on Coordinated Universal Time (UTC), not local time. Grid operators, coordinated by entities like the North American Electric Reliability Corporation (NERC), ensure frequency stability through automatic generation control (AGC) systems, which adjust power output to match demand in real time.
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The DST shift doesn’t disrupt this process. When clocks spring forward (e.g., 2:00 AM becomes 3:00 AM), demand may briefly drop as human activity adjusts, but AGC systems respond instantly, balancing generation and load. In the fall, when clocks fall back (e.g., 2:00 AM repeats), a temporary demand spike might occur, but the grid’s inertial stability—provided by large rotating generators—and real-time monitoring prevent desynchronization. Operators may pre-schedule minor adjustments, but the system’s design, rooted in UTC-based frequency regulation, ensures seamless operation. Thus, while local time shifts, the grid’s 60 Hz hum remains steady across the transition.
Salutariness (Cleanliness) standards follow culture (which follows the science which follows water and chemical management systems). What is considered clean or hygienic in one culture may differ from what is considered clean or hygienic in another culture. In some cultures, it is customary to remove shoes before entering a home, as it is considered unclean to wear shoes indoors. In Japan, it is customary to take a bath or shower before entering a public bathhouse or hot spring, as it is considered unclean to enter a communal bath without washing first. Most public swimming pools in the United States conform to a similar standard.
In some cultures, it is customary to eat with one’s hands, while in others, using utensils is the norm. Similarly, in some cultures, it is customary to clean one’s hands and face before eating, while in others, it is not considered necessary. Cleanliness standards can also vary depending on the level of economic development, access to clean water and sanitation facilities, and public health policies in different countries. Mahatma Gandhi believed that promoting cleanliness and hygiene could help in building a strong and self-sufficient nation.
“Harlem school custodian to retire, gets cafeteria dedicated to him” | Rockford Register Star
At 15:00 UTC today we review best practice literature for hygiene in education community interior spaces; including related accessory technologies. Owing to the circumstances of the pandemic we have rewritten our past coverage of this topic for 2022.
Among the standards setting organizations active in this domain: (Short List)
We place public consultation deadlines at top priority in the time available and will schedule a separate break-out session to write and send comments.
Open to everyone. Use the login credentials at the upper right of our home page.
Water is essential for sanitation and hygiene — and proper sanitation is essential for protecting water sources from contamination and ensuring access to safe drinking water. Access to safe water and sanitation is crucial for preventing the spread of waterborne diseases, which can be transmitted through contaminated water sources or poor sanitation practices. Lack of access to safe water and sanitation can lead to a range of health problems, including diarrheal diseases, cholera, typhoid, and hepatitis A.
On the other hand, poor sanitation practices, such as open defecation, can contaminate water sources, making them unsafe for drinking, bathing, or cooking. This contamination can lead to the spread of diseases and illness, particularly in developing countries where access to clean water and sanitation facilities may be limited.
We track the catalog of the following ANSI accredited standards developers that necessarily require mastery of building premise water systems:
American Society of Heating, Refrigerating and Air-Conditioning Engineers: ASHRAE develops standards related to heating, ventilation, air conditioning, refrigeration systems — and more recently, standards that claim jurisdiction over building sites.
American Society of Mechanical Engineers: ASME develops standards related to boilers, pressure vessels, and piping systems.
American Water Works Association: AWWA is a standards development organization that publishes a wide range of standards related to water supply, treatment, distribution, and storage.
ASTM International: ASTM develops and publishes voluntary consensus standards for various industries, including water-related standards. They cover topics such as water quality, water sampling, and water treatment.
National Fire Protection Association: NFPA develops fire safety standards, and some of their standards are related to water, such as those covering fire sprinkler systems and water supplies for firefighting within and outside buildings. We deal with the specific problems of sprinkler water system safety during our Prometheus colloquia.
National Sanitation Foundation International (NSF International): NSF International develops standards and conducts testing and certification for various products related to public health and safety, including standards for water treatment systems and products.
Underwriters Laboratories (UL): UL is a safety consulting and certification company that develops standards for various industries. They have standards related to water treatment systems, plumbing products, and fire protection systems.
* The evolution of building interior water systems has undergone significant changes over time to meet the evolving needs of society. Initially, water systems were rudimentary, primarily consisting of manually operated pumps and gravity-fed distribution systems. Water was manually fetched from wells or nearby sources, and indoor plumbing was virtually nonexistent.
The Industrial Revolution brought advancements in plumbing technology. The introduction of pressurized water systems and cast-iron pipes allowed for the centralized distribution of water within buildings. Separate pipes for hot and cold water became common, enabling more convenient access to water for various purposes. Additionally, the development of flush toilets and sewage systems improved sanitation and hygiene standards.
In the mid-20th century, the advent of plastic pipes, such as PVC (polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride), revolutionized plumbing systems. These pipes offered durability, flexibility, and ease of installation, allowing for faster and more cost-effective construction.
The latter part of the 20th century witnessed a growing focus on water conservation and environmental sustainability. Low-flow fixtures, such as toilets, faucets, and showerheads, were introduced to reduce water consumption without compromising functionality. Greywater recycling systems emerged, allowing the reuse of water from sinks, showers, and laundry for non-potable purposes like irrigation.
With the advancement of digital technology, smart water systems have emerged in recent years. These systems integrate sensors, meters, and automated controls to monitor and manage water usage, detect leaks, and optimize water distribution within buildings. Smart technologies provide real-time data, enabling better water management, energy efficiency, and cost savings.
The future of building interior water systems is likely to focus on further improving efficiency, sustainability, and water quality. Innovations may include enhanced water purification techniques, decentralized water treatment systems, and increased integration of smart technologies to create more intelligent and sustainable water systems.
The first mover in building interior water supply systems can be traced back to the ancient civilizations of Mesopotamia, Egypt, and the Indus Valley. However, one of the earliest known examples of sophisticated indoor plumbing systems can be attributed to the ancient Romans.
The Romans were pioneers in constructing elaborate water supply and distribution networks within their cities. They developed aqueducts to transport water from distant sources to urban centers, allowing for a centralized water supply. The water was then distributed through a network of lead or clay pipes to public fountains, baths, and private residences.
One notable example of Roman plumbing ingenuity is the city of Pompeii, which was buried by the eruption of Mount Vesuvius in 79 AD. The excavation of Pompeii revealed a well-preserved plumbing system that included indoor plumbing in some houses. These systems featured piped water, private bathrooms with flushing toilets, and even hot and cold water systems.
The Romans also invented the concept of the cloaca maxima, an ancient sewer system that collected and transported wastewater away from the city to nearby bodies of water. This early recognition of the importance of sanitation and wastewater management was a significant advancement in public health.
While the Romans were not the only ancient civilization to develop indoor plumbing systems, their engineering prowess and widespread implementation of water supply and sanitation infrastructure make them a key player in the history of building interior water systems.
ANSI’s 2025/2026 Student Paper Competition challenges high school & college students to investigate the invisible standards that keep our world running—from smartphone compatibility to food safety.
For nearly twenty years now, the American National Standards Institute Committee on Education administers a student paper competition intended to encourage understanding of the global standards system that also provides a solid prize — in the $1000 to $5000 range. The topic of the 2024 Student Paper Competition will be What Role Do or Could Standards Play in Safe and Effective Implementation of Artificial Intelligence Applications/Systems?
For the past six years Standards Michigan has hosted Saturday morning workshops to help students (and faculty) interested in entering the contest. We will soon post those dates on our CALENDER. We typically host them — three sessions ahead of the deadline — on Saturday mornings.
We provide links to previous paper winners and refer you to Lisa Rajchel: lrajchel@ansi.org for all other details.
💙Last middle school dance💙 Time is flying, but I’ve loved every moment of this phase — shopping for his unique style, the cologne hunts, the late-night talks, and watching him chase what he loves. Keep being authentically you, GT!💥 pic.twitter.com/glH8AHyid4
One week postpartum with the sweetest baby ever. I am blessed beyond measure to have had my 5th successful home birth and a very smooth recovery. God is so good! pic.twitter.com/bWBqAtOUkj
A South African man who recently picked up an abandoned baby in Mpumalanga suburb of Emalahleni is now applying for court permission to adopt the boy and get him a birth certificate
Ten years after our wedding, our triplets have finally arrived… Thank you to everyone who sent us congratulations. These are our most precious treasures. #fblifestylepic.twitter.com/AXKOj7vL7Q
The body of 8-year-old Mystic camper Virginia Hollis was found along the Guadalupe River earlier this week, more than a week after the July 4 floods in Texas.
Yesterday, this angel’s favorite horse followed her casket through the streets to bid her farewell. 😭 pic.twitter.com/T8f8O6n4q3
After 15 years of marriage, the first child is actually twins! 🥳Maybe no one will say it, but we want to share this joy anyway. 🌹 pic.twitter.com/T60zPJZ0tT
He was with me almost every day for 12 years. The best living creature I’ve ever known including humans.
He protected children and loved his job out here.
I hope I can be half the man this dog was to our world. I buried him last evening in his beloved woods.
A heartfelt surprise for her best friend on graduation day.. She didn’t expect it because they hadn’t seen each other in so long, ever since her friend moved to another citypic.twitter.com/3pxswYFVNt
From couple matching to couple chief-ing!!!thrilled and honored to serve as chief residents together at the program that shaped us. Grateful for the journey and excited for what’s ahead! #HUHpic.twitter.com/lClrJpGABW
20th March 2010
A couple – just married – choose to cycle from the church to their reception.
From my book ‘Cambridge – Town & Gown’. pic.twitter.com/Y9zzcUsHh4
We got him moved into the new house! His bride-to-be is helping him decorate and put things away and will be joining him there on their wedding night! Today, only a few tears were shed (out of his sight). We are beyond happy for them! @BrandonLansdownpic.twitter.com/NSNmzg8hyG
Naistenpäivän kunniaksi haluan jakaa, että minulla on onni ja siunaus odottaa omaa tytärtä. Toivon näyttäväni hänelle samanlaista naisen mallia kuin oma äitini on näyttänyt minulle. Nainen voi olla vahva ja lempeä, sitkeä ja kaunis, herkkä ja periksiantamaton. Nainen voi olla… pic.twitter.com/MivsLRh1wJ
Syracuse University. Kissing Bench: This bench on the Quad is steeped in tradition. Legend has it that if a couple kisses on the bench, they will eventually marry. Conversely, if a single person sits there alone, they risk staying single forever.
University of Idaho. Hello Walk and Kissing Rock: While not a bench, this area on campus features a large rock where students have historically kissed. It’s a romantic tradition for couples at the university.
It is so rare for people to see a normal, white family that lefties think it gives ”Third Reich vibes”. This really tells us that we need to make it less rare.
We honor Día de los Muertos, a cherished tradition that celebrates the lives of those who have passed. 💐
Through colorful altars, marigolds, and memories, families come together to remember loved ones and teach new generations about love, legacy, and culture — honoring… pic.twitter.com/SVER8G2t3X
Abstract: The author’s description of the Halloween Problem demonstrates the role of cautionary tales in the history of computing. The Halloween Problem emerged in the context of structured query language optimization in relational database research. Normally, a query optimizer works by measuring system calls and paging requests and applying heuristics to the entire access path tree. Query optimization was one of the most challenging tasks facing System R researchers at IBM. These experiments with query optimization form the milieu in which the Halloween Problem emerged.
We hosted a meet & greet for our newly hired teachers and their mentors at DES this morning. We are excited for these new Vikings to join our team! 💙🤍 pic.twitter.com/nWX0CF70iq
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Dickinson College | Cumberland County Pennsylvania
“Every week, patrons of Farmers on the Square can count on locating the Dickinson College Farm’s wood-fired pizza oven right at the heart of the square. Our handmade and fresh-baked pizzas reflect the seasonal fluctuations on our farm in addition to quality ingredients grown within the Cumberland Valley. In addition to wood-fired pizzas, our stand features seasonal organic vegetables, fresh salad dressings, refreshing popsicles and “our farm in a jar” through canned soups, pickled favorites, salsa, hot sauce and more!”
Craving the College Farm’s wood-fired pizza and made-from-scratch soup? So are we! Now you can indulge in these mouthwatering treats without stepping foot off campus. https://t.co/7pxypmxb10pic.twitter.com/UYgxpDnms6
Craving the College Farm’s wood-fired pizza and made-from-scratch soup? So are we! Now you can indulge in these mouthwatering treats without stepping foot off campus. https://t.co/7pxypmxb10pic.twitter.com/UYgxpDnms6
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwBpic.twitter.com/GkAXrHoQ9T
