$getNativeTimeZoneId

$getNativeTimeZoneId()

Retrieves the IANA timezone identifier for the local system's current timezone.

Signature

$getNativeTimeZoneId(): TimeZoneIdNative

Return Type

• TimeZoneIdNative - The local system's IANA timezone identifier

Example

Remarks

• Always returns the local machine's timezone identifier regardless of whether timeZone(), utc(), or toUTC() methods have been applied
• For modified instances, use the timeZoneId public property instead to get the current instance's timezone context
• Directly accesses Intl.DateTimeFormat().resolvedOptions().timeZone for the system identifier
• Returns standardized IANA timezone identifiers (e.g., "Asia/Dhaka", "America/New_York")

Usage Notes