convert_timestamp
Convert a timestamp between formats: unix epoch (seconds/ms) ↔ ISO 8601 ↔ human-readable ↔ relative ("3 hours ago"). Auto-detects input format. Returns all formats at once plus UTC offset info.
timezone_convert
Convert a datetime from one timezone to another. When show_all=true, displays the time in 7 common timezones simultaneously (UTC, JST, EST, PST, CET, IST, CST).
parse_cron
Parse a standard 5-field cron expression (minute hour day month weekday). Returns: human-readable description, validation status, next 5 run times. E.g. "*/5 9-17 * * 1-5" → "Every 5 minutes from 9am to 5pm, Mon-Fri".
time_diff
Calculate the difference between two datetimes. Returns difference in seconds, minutes, hours, days, weeks, and approximate months. Handles past/future direction automatically.
format_duration
Convert between duration formats: seconds (integer) ↔ human string ("2h 30m 15s") ↔ ISO 8601 duration ("PT2H30M15S"). Auto-detects input format.