To be fair, this is what I expect of any delay function. If it needs to be precise to the millisecond, especially when scheduled hours or days ahead, I'd defaul

To be fair, this is what I expect of any delay function. If it needs to be precise to the millisecond, especially when scheduled hours or days ahead, I'd default to doing a sleep until shortly before (ballpark: 98% of the full time span) and then a smaller sleep for the remaining time, or even a busy wait for the last bit if it needs to be sub-millisecond accurate I've had too many sleep functions not work as they should to still rely on this, especially on mobile devices and webpages where background power consumption is a concern. It doesn't excuse new bad implementations but it's also not exactly surprising