Tell HN: Sudden Chile daylight savings time rules change causes chaos
This kind of thing is why it's important to store user-specified future dates as local time + IANA zone name.<p>If a user wants a calendar event at 9am, they probably still mean 9am after accounting for time zone or DST changes.<p>Storing dates as UTC is appropriate for dates in the past, or future dates that a user will never expect to happen at a certain wall-clock time.<p>(An IANA zone name is something like America/New_York, and not EST or UTC-05:00)