I experience time drift with devices not connected to NTP like cheap stopwatch/microwave clock/etc, but my all my devices connected to NTP stay synced on their own. For example: - my Windows time settings says: "Last successful time synchronization: 3/7/2024..." (This ~41 hours ago and not manually triggered.) - https://time.is/: "Your clock is 0.4 seconds ahead." I'm a little surprised there is a 0.4 second... - Source: Hacker News / 4 months ago

It's my first quartz watch and I love it to bits! Made me realize that the accuracy of a quartz movement is no joke. I knew nothing much about watches until I started this hobby back in September, and I've still got lots to learn! But from the little I've learned so far, lots of videos say how accurate quartz is, but I didn't realize how accurate it was until I was cleaning some of my mechanical watches. Seikos, a... Source: 7 months ago

Hi all! Need advice to buy a new trail bike 140 fr/140 back, under 2500 $. On all I need an XL size as I'm 1.96cm and 97kg. Mostly I will do soft trails and maybe in 1 or 2 years after I will progress some harder ones.Maybe is better to buy a cheap one then upgrade over time.is is really that good the fork on the h10 Fox 34 Float Performance 140 3-Position vs the h30 Marzocchi Bomber Z2 140 ? Source: 7 months ago

Was wondering, because I put my mechanical watch and digital correct to the second via time.is , how people years ago had to correct time differences? Source: 8 months ago

I just tested it against https://time.is on my cell phone (using wifi calling because network strength is abysmal where I live). I don't have a precise measurement but it was imperceptibly close, within 100ms probably. Certainly close enough to set a clock for non critical purposes. - Source: Hacker News / 9 months ago

My site has this but only for satellites. https://james.darpinian.com/satellites/ For OP I'd suggest doing calendar events for notifications rather than Web Push. Web Push is very difficult to set up, users are suspicious of it, and it doesn't guarantee timely delivery on Android devices. Calendar events work well on mobile. - Source: Hacker News / 4 months ago

I bet it is used in a lot of ways people don't notice. In my site[1] I use wasm to run an ancient piece of code called SGP4, but it's totally invisible to the user. Someone actually ported SGP4 to JavaScript but it's slower and doesn't perfectly match the original, so it's great to have the option to run the real C version (actually the original is Fortran but the C port is the standard these days). [1]... - Source: Hacker News / 5 months ago

I live 10 miles from Boston and I've seen them a whole bunch. I've used https://james.darpinian.com/satellites/?special=starlink. - Source: Hacker News / 5 months ago

Https://james.darpinian.com/satellites/ Put in your location and it will tell you when and where to look at the sky to see one. Works great for me and hopefully it will work for you. - Source: Hacker News / 5 months ago

Starlink Go to this site. It will tell you all the satelites in your area and what time they will pass over you. It will also tell you how many starlink satts will be in the 'train' . Most I have seen was 54 travelling east west and 52 travelling north south. And passed in the middle. That would have totally freaked out a few people. Https://james.darpinian.com/satellites/. Source: 7 months ago