Working with oracle timezone format TZR TZH TZM

Bismillahir Rahmanir Raheem

Today we will look to some format that are used to convert or outputting more precise information.

TZH--
This gives the hour from the timezone and is only valid with timestamp and interval formats

TZM----
This gives the minute from the timezone and is only valid with timestamp and interval formats

TZR---
This gives the time zone region information and is only valid with timestamp and interval formats

alter session set time_zone='asia/calcutta';

select to_char(systimestamp,'TZR-TZH-TZM')
from dual;

this will give us

Asia/calcutta-+05-30

NOte-- remember all these formats are only valid with timestamp and interval types not with date type