*** The value after and the value before
(Turns take a quarter day each; The Hang of Thursdays)
Turns take a quarter day each, and the game rotates through the days of the week.

	{*}"The Hang of Thursdays"
	
	The Stage is a room. Rule for printing the name of the stage: say "[current weekday] [current time period]" instead.

	A weekday is a kind of value. The weekdays are Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday. The current weekday is a weekday that varies. The current weekday is Saturday.

	A time period is a kind of value. The time periods are morning, afternoon, evening, night. The current time period is a time period that varies. The current time period is afternoon.
	
	This is the new advance time rule:
		if the current time period is less than night:
			now the current time period is the time period after the current time period;
		otherwise:
			now the current time period is morning;
			now the current weekday is the weekday after the current weekday.

Now we need to borrow from a later chapter to make these instructions apply to the passage of time:

	{**}The new advance time rule is listed instead of the advance time rule in the turn sequence rules.
	
	Test me with "z / z / z / z / z".