There's some TIDES data over here: tides.dds.dot.ca.gov

timezone-boundary-builder and node-geo-tz have been released with 2026b data.

My train this morning was on time, definitely not 15 minutes late. 🏃‍♂️💨

Need to go from geographic points to time zone identifiers in @clickhouse.com? With @evansiroky.bsky.social's time zone boundary shapefiles and ClickHouse's support for polygon dictionaries, it's fast and easy: kurtraschke.com/2026/04/clic...

I learned of a possible transit data quality problem that I decided to go investigate in person yesterday.

The plans for the Sacramento Station District look really cool: www.cityofsacramento.gov/content/dam/...

timezone-boundary-builder and node-geo-tz have been released with 2025c data.

Solid storm this weekend

I'm wondering whether the Asia/Hanoi timezone needs to be constructed using Open Historical Map data.

New Year: New Job? I'm hiring two Transit Data Scientists to work on SB125 and other transit programs with me at CalSTA calcareers.ca.gov/CalHrPublic/...

I have said this before, but I do wish one prominent tech YouTuber would do a BTS tour with a transit agency, showing off all the tech that makes its stuff work. Even just the various systems on a bus today is wild. It'd go a long way to help the image of public transit.

timezone-boundary-builder milestone: 1000 GitHub stars

City Councilman Unearths Magical Zoning Amulet theonion.com/city-co...

The WA House just approved SB 5501, which prohibits employers from requiring driver's licenses as a condition of employment, unless driving is an essential function of the job. It passed 61-36. This bill is headed to the Governor's desk! app.leg.wa.gov/billsummary/...

Sad state of affairs in transportation safety.

This new administration is putting safety as its last priority.

About 35,000 feet over the Mojave Desert, northwest of Los Angeles, Boom Supersonic's XB-1 became the first privately funded airplane to break the sound barrier during a test flight reut.rs/3E9xfO4

I'm not getting worked up about this one at all. I've known for a while that Google Maps invests a lot in localization to the extent of even drawing borders differently based on where a device accesses Google Maps from.

The SF Bay area is aging. Map from MTC's 2024 Coordinated Plan: mtc.ca.gov/digital-libr...

The people colluding to create housing shortages in order to jack up the price of homes and rent are mostly single family homeowners, not nefarious corporate actors; and they’re doing it in public at your local planning commission, not in smoke-filled conference rooms or whatever.

Good article summarizing some of the executive orders that may impact transit from @apta-info.bsky.social. aptapassengertransport.com/president-tr...

Trumps executive orders "could imperil billions of dollars in funding for projects that states have already begun working on... for everything from roads and bridges to broadband and withstanding the effects of climate change." This could get messy. h/t @yfreemark.bsky.social

OpenStreetMapping intensifies... if I can figure out how to add this as a custom layer.

timezone-boundary-builder release 2025a is now live: github.com/evansiroky/t...

One of these days I may need to go to Doklam myself to figure out what timezone they really observe over there.

BlueSky hasn't fully arrived yet. Nobody seems to have mentioned today's 2025a timezone database release.

There's probably a esoteric reason for why this construction project has left a tiny portion of the previous building's outside wall intact.

We are thrilled to announce SB 79, a new bill from @scottwiener.bsky.social that will legalize multi-family housing near transit. We are excited to co-sponsor this landmark legislation with SPUR, @streetsforall.org and the Bay Area Council.

I think there's something to be said about how there's too much process to get infrastructure and housing projects approved, but this seems like a pendulum swinging too far in the direction of deregulation when potentially even safety precautions are thrown out the window.

Starting to wonder if I should limit my kids from watching certain PBS kids shows like Nature Cat or Wild Kratts. Too many times there are villains that are trying to build homes.

Diridon Station conceptual designs on display in Diridon Station.

Climate change is real and getting worse, so we're eliminating red tape to rebuild low-density homes in high-risk areas (and requiring insurance sales) while retaining the regulations for high-density structures in low-risk areas and for clean energy production and transmission.

Went skiing at Dodge Ridge. Decided to make a side trip to Sacramento on the way home. Taking a bus from Stockton.

Is there a link between #ClimateChange & increasing risk/severity of #wildfire in California--including the still-unfolding disaster? Yes. Is climate change the only factor at play? No, of course not. So what's really going on? [Thread] #CAfire #CAwx #LAfires iopscience.iop.org/a...

Los Angeles wildfire boundaries via Catenary right now. Stay safe out there.

Free Big Blue Bus transporting people from Palisades and Santa Monica to the Westwood Rec Center! www.santamonica.gov/blog/palisad... Pick-up locations: - Ocean Ave + San Vicente Blvd - 7th St + San Vicente Blvd #PalisadesFire #LosAngeles #CAwx

KTLA's @GeneKangTV reports from the perimeter of the #PalisadesFire where crews needed to clear vehicles using a bulldozer to make access for firefighters. Live coverage: trib.al/tBDjKJ0

Wow, no California state deficit this year! apnews.com/article/cali...

Yikes, I hope everyone in SoCal gets through this ok.

tl;dr if you already have a housing shortage, then raising the median income will actually *cause* homelessness. The only way out of this trap is to ensure that housing production keeps pace with wage growth.

I'm concerned I'm turning off my 4 year old to statistics since he's lost his first two coin toss battles with his sister to decide who gets something they both want.

I’m fine with limiting the speed of e-scooters and e-bikes just as long as we do the same for every vehicle on our roads.

Life was more complicated before time zones

Don’t think of it as whether the data has error or not. Most of the time it will. Think of it as whether the error in the data will cause you to make a different decision than if the data was perfectly clean. Most of the time it won’t.

I have a hobby of correcting people when they say EDT or PDT when most people are actually observing EST or PST. However each time I see the opportunity to do so, I have to double check which one is actually happening at the moment.

"It's like a dripping tap water torture." Carmel remains undefeated in delivering quality NIMBY content: www.ksbw.com/article/carm...

Taking transit to Mt Bachelor

I'm retiring my old ski jacket from high school (orange) with the new green one. My relatives had this other ski suit laying around that I took off their hands, so I'm maybe ready for the next retro day at the slopes.

Parking lot hero skin cut