https://docs.oracle.com/en/database/oracle/oracle-database/18/refrn/NLS_TIMESTAMP_TZ_FORMAT.html
NLS_TIMESTAMP_TZ_FORMAT
NLS_TIMESTAMP_TZ_FORMAT defines the default datetime format model to use with the TO_CHAR and TO_TIMESTAMP_TZ functions.
tz formatnlstimestamp
https://dlia.out.ac.tz/post-format-audio/
Post Format: Audio – dlia.out.ac.tz
postformataudio