Timezone Toolkit

Get the current local time in an IANA timezone, including the UTC offset, zone abbreviation and whether DST is in effect. Use whenever you need to know what time it is 'now' somewhere.

Convert a specific date/time from one IANA timezone to another. Accepts ISO 8601 or natural language ('next Tuesday 3pm'). Returns the converted datetime with its UTC offset, zone abbreviation and DST flag.

Convert a single instant into many IANA timezones at once — a world-clock view. Like convert_timezone, but 'to' is a list of target zones.

Get the exact UTC offset of an IANA timezone at a given instant, DST-aware. Correctly handles fractional offsets such as India +05:30 and Nepal +05:45.

List or search valid IANA timezone identifiers, optionally filtered by a city, region or country substring (e.g. 'kolkata', 'america'). Use it to discover the exact identifier to pass to the other tools.

Resolve a city or country name to its IANA timezone(s) so you don't need the exact identifier — e.g. 'Delhi' -> 'Asia/Kolkata'. Use it first when you only have a place name.

Timezone-aware date arithmetic: add or subtract a duration to a datetime (days are calendar-based and DST-safe; hours and minutes are absolute), or compute the difference between two datetimes that may be in different zones.

Find working-hour time slots that overlap across participants in different timezones for a meeting of a given duration, excluding weekends and (when a country is given per participant) that person's public holidays. Free tier returns at most 1 slot; the paid endpoint returns every matching slot (see

Check whether a given date is a public holiday in a country (identified by its ISO 3166-1 alpha-2 code), and return the holiday name if so. Backed by an authoritative public-holiday dataset.