Current Date Tool Node
Returns the current date/time in a specified IANA timezone, optionally formatted.

This node provides the current date and time for a requested IANA timezone. It validates the timezone, returns ISO 8601 and Unix timestamp always, and optionally returns a user-formatted string.
Actions
- Validates the provided IANA timezone string; returns an error for invalid timezones.
- Obtains the current date/time in the specified timezone.
- Returns ISO 8601 datetime under iso.
- Returns Unix timestamp (seconds) under timestamp.
- If a strftime format (fmt) is provided, returns a formatted string under formatted.
- Accepts inputs: fmt (optional str), tz (IANA timezone string, default "UTC").
Inputs (fields)
- fmt (optional) — strftime format string; if omitted, no "formatted" field is returned.
- tz — IANA timezone name (e.g., Europe/Amsterdam); defaults to UTC.
Outputs
- iso — ISO 8601 datetime string (always present).
- timestamp — Unix timestamp in seconds (always present).
- formatted — strftime-formatted string (present only if fmt provided).