# xf:get-timezone-from-time

Extracts the current timezone from $time-var.

If $time-var does not contain a timezone, the empty sequence is returned.

If the value of $time-var is the empty sequence, the empty sequence is returned. The empty sequence is a sequence containing zero items (), which is similar to null in SQL.

### Signatures

xf:get-timezone-from-time(xs:time? $time-var) —> xs:string?

### Arguments

Data Type | Argument | Description
--- | --- | ---
xs:time? | $time-var | Contains a representation of the date and time.

### Returns

Returns the current timezone as a string from $time-var.

Returns an empty sequence, if $time-var does not contain a timezone. (See examples below.)

### Examples

#### Timezone

The following example uses the get-timezone-from-time function with a timezone:

    <tz>{xf:get-timezone-from-time(xs:time("14:21:01-05:00"))}</tz>

The preceding query generates the following result:

    <tz>-05:00</tz>

In the preceding query, the -05:00 string specifies the time is specified in the Eastern Standard timezone which is 5 hours behind Coordinated Universal Time (UTC).

#### UTC Timezone

The following example uses the get-timezone-from-time function with a timezone:

    <tz>{get-timezone-from-time(xs:time("14:21:01Z"))}</tz>

The preceding query generates the following result:

    <tz>00:00</tz>

In this preceding query, the Z means the time is being specified in Coordinated Universal Time (UTC), so no timezone is reported.

#### No Timezone

The following is an example of using the get-timezone-from-time function with no timezone specified:

    <tz>{xf:get-timezone-from-time(xs:time("22:21:01"))}</tz>

Returns an empty sequence, because $time-var does not contain a timezone.

Related Topics

W3C get-timezone-from-time function description.

W3C time data type description.