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DateTime Tool

Overview

A timezone-aware date and time tool. Use it to:

  • get the current time in any IANA timezone (now)
  • parse an ISO 8601 datetime string into structured fields (parse)
  • convert a datetime from one timezone to another (convert)
  • shift a datetime by days/hours/minutes/seconds (shift)
  • compute the difference between two datetimes (diff)

It uses the standard library only (datetime, zoneinfo) plus tzdata so the tool also works on Windows where the OS does not ship the IANA timezone database.

Prerequisites and Dependencies

  • Python 3.12 or later
  • atomic-agents
  • pydantic
  • tzdata

Installation

  1. Using the Atomic Assembler CLI: run atomic and select datetime_tool.
  2. Or copy the tool/ folder directly into your project.

Input & Output Structure

Input Schema

  • operation (Literal): one of now, parse, convert, shift, diff.
  • timezone (str): IANA timezone name. Defaults to UTC. For convert this is the source timezone of input.
  • target_timezone (str, optional): required for convert.
  • input (str, optional): ISO 8601 datetime string for non-now operations.
  • input_2 (str, optional): second datetime, required for diff (computes input_2 - input).
  • days, hours, minutes, seconds (int): duration components for shift (negative values subtract).

Output Schema

  • operation (str): operation that was performed.
  • iso, timezone, unix_timestamp, year, month, day, hour, minute, second, weekday, human: populated for now/parse/convert/shift.
  • diff_seconds, diff_human: populated for diff.
  • error (str, optional): set when something went wrong.

Usage

from tool.datetime_tool import DateTimeTool, DateTimeToolInputSchema

tool = DateTimeTool()

# Current time in Tokyo
print(tool.run(DateTimeToolInputSchema(operation="now", timezone="Asia/Tokyo")))

# Convert a Brussels meeting time to New York
print(tool.run(DateTimeToolInputSchema(
    operation="convert",
    input="2026-04-29T15:30:00",
    timezone="Europe/Brussels",
    target_timezone="America/New_York",
)))

Contributing

PRs welcome — see the main repo CONTRIBUTING.md.

License

Same as the main Atomic Agents project.