Custom Calender for a RPG

[Jagang]

I need to alter the calender to be based on the calender of an RPG world. This worlds calender works like this:

Each day is divided into a standard twenty-four hours, with sixty minutes per hour and sixty seconds in every minute.

Six standard days make up a week, and five weeks make one month. Each month has thirty days in it.

Each year consists of twelve months or 360 days, with no years being leap years.

I also need to be able to add the custom names for the months and weekdays.

Now can anyone help me.