HST — Hawaii Standard Time
HST is Hawaii Standard Time, -10:00, used in Oceania. In code, use Pacific/Honolulu rather than the abbreviation.
Use the IANA name, not the abbreviation
Python
from datetime import datetime
from zoneinfo import ZoneInfo
# right: an IANA zone carries the full history of rule changes
now = datetime.now(ZoneInfo("Pacific/Honolulu"))
print(now.isoformat(), now.tzname())
# wrong: an abbreviation is not resolvable, and a hard-coded offset
# silently rots the next time the rules change
# now = datetime.now(timezone(timedelta(hours=...))) # don'tHST questions
What does HST stand for?
HST is Hawaii Standard Time, -10:00, used in Oceania. The IANA zone to use in code is Pacific/Honolulu.
What time is it in HST right now?
Hawaii Standard Time: 14:15 on Wednesday (HST).
Which IANA timezone should I use instead of HST?
Pacific/Honolulu for Hawaii Standard Time. Date libraries cannot resolve bare abbreviations, and an abbreviation carries no daylight-saving history, so a stored offset silently rots when a government changes the rules.