(date->string date) (procedure)
Converts a date structure value (returned by MzScheme's seconds->date) into a string, using the current date display format.
(date-display-format format) (procedure)
Sets the date display format based on format, which can be any of 'American, 'Chinese, 'German, 'Indian, or 'Irish. If format is not provided, the current format is returned instead.