They don't observe this in Japan, but we have meetings with the American client a lot, so I wrote a heads-up email last week to give plenty of warning. I showed up for a phone meeting on Friday and they told me I was an hour late. I went back and looked through my emails; though my initial email was clear about the date of change, they wrote back as though it would be effective last week, and I didn't notice.
FFFFFUUUUUUUU....