PDT — Pacific Daylight Time
PDT is Pacific Daylight Time, -07:00, used in North America. In code, use America/Los_Angeles 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("America/Los_Angeles"))
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'tPDT questions
What does PDT stand for?
PDT is Pacific Daylight Time, -07:00, used in North America. The IANA zone to use in code is America/Los_Angeles.
What time is it in PDT right now?
Pacific Daylight Time: 17:16 on Wednesday (PDT).
Which IANA timezone should I use instead of PDT?
America/Los_Angeles for Pacific Daylight 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.