<entry>ISO 8601, with time zone as UTC offset</entry>

<entry>ISO 8601, with time zone as UTC offset</entry>

<entry>ISO 8601, with time zone as UTC offset</entry>

<entry>ISO 8601, with time zone as UTC offset</entry>

</row>

<row>

<entry><literal>040506+0730</literal></entry>

<entry>ISO 8601, with fractional-hour time zone as UTC offset</entry>

</row>

<row>

<entry><literal>040506+07:30:00</literal></entry>

<entry>UTC offset specified to seconds (not allowed in ISO 8601)</entry>

<row>

<entry><literal>-8:00:00</literal></entry>

<entry>UTC offset for PST</entry>

</row>

<entry>UTC offset for PST (ISO 8601 extended format)</entry>

<entry>UTC offset for PST (ISO 8601 basic format)</entry>

<entry>UTC offset for PST (ISO 8601 basic format)</entry>

<entry>Short form of <literal>zulu</literal> (also in ISO 8601)</entry>

<para>

In the <acronym>ISO</acronym> style, the time zone is always shown as

a signed numeric offset from UTC, with positive sign used for zones

east of Greenwich. The offset will be shown

as <replaceable>hh</replaceable> (hours only) if it is an integral

number of hours, else

as <replaceable>hh</replaceable>:<replaceable>mm</replaceable> if it

is an integral number of minutes, else as

<replaceable>hh</replaceable>:<replaceable>mm</replaceable>:<replaceable>ss</replaceable>.

(The third case is not possible with any modern time zone standard,

but it can appear when working with timestamps that predate the

adoption of standardized time zones.)

In the other date styles, the time zone is shown as an alphabetic

abbreviation if one is in common use in the current zone. Otherwise

it appears as a signed numeric offset in ISO 8601 basic format

(<replaceable>hh</replaceable> or <replaceable>hhmm</replaceable>).

</para>