This template displays the weekday name of a user's timezone in both short and long format given user's preference. This template only shows day name. It doesn't show date. To use date please see User:Pratyya Ghosh/Date. If you want to use both then use these two templates accordingly.
format for hour format. Possible entry is dn for abbreviation for the day name. By default it is set to full weekday name.
tz-display for display of bracketed users timezone. If used y or Y then another parameter will be added. For example {{User:Pratyya Ghosh/Day|tz=+6|tz-display=y}} will show as Saturday (UTC+06:00). By default it is not used.
purge-display for display of a subscripted purge link. If used y or Y then another parameter will be added. For example {{User:Pratyya Ghosh/Day|tz=+6|purge-display=y}} will show as Saturday (purge). By default it is not used.
The current purge button in the template is not included by default in any place. It's just for this page. If you need to use the purge button then you need to use the purge-display parameter.