; Date expressions

date =  day						; 21
date =/ month 1*SPACE weekday				; 12 Fri
date =/ weekday 1*SPACE day				; Fri 21
date =/ year						; 2012
date =/ year 1*SPACE weekday				; 2012 Fri
date =/ weekday 1*SPACE year				; Fri 2012
date =/ month 1*SPACE day				; 12 21
date =/ month 1*SPACE day 1*SPACE weekday		; 12 21 Fri
date =/ month 1*SPACE weekday 1*SPACE day		; 12 Fri 21
date =/ weekday 1*SPACE day 1*SPACE month		; Fri 21 12
date =/ month 1*SPACE year				; 12 2012
date =/ month 1*SPACE year 1*SPACE weekday		; 12 2012 Fri
date =/ month 1*SPACE weekday 1*SPACE year		; 12 Fri 2012
date =/ weekday 1*SPACE day 1*SPACE year		; Fri 21 2012
date =/ year 1*SPACE month				; 2012 12
date =/ year 1*SPACE month 1*SPACE weekday		; 2012 12 Fri
date =/ year 1*SPACE weekday 1*SPACE day		; 2012 Fri 21
date =/ weekday 1*SPACE year 1*SPACE month		; Fri 2012 12
date =/ year 1*SPACE month 1*SPACE day			; 2012 12 21
date =/ year 1*SPACE month 1*SPACE day 1*SPACE weekday	; 2012 12 21 Fri
date =/ year 1*SPACE month 1*SPACE weekday 1*SPACE day	; 2012 12 Fri 21
date =/ year 1*SPACE weekday 1*SPACE month 1*SPACE day	; 2012 Fri 21 12
date =/ weekday 1*SPACE year 1*SPACE month 1*SPACE day	; Fri 2012 12 21
date =/ month 1*SPACE year 1*SPACE day			; 12 2012 21
date =/ month 1*SPACE year 1*SPACE day 1*SPACE weekday	; 12 2012 21 Fri
date =/ month 1*SPACE year 1*SPACE weekday 1*SPACE day	; 12 2012 Fri 21
date =/ weekday 1*SPACE day 1*SPACE year 1*SPACE month	; Fri 21 2012 12
date =/ month 1*SPACE day 1*SPACE year			; 12 21 2012
date =/ month 1*SPACE day 1*SPACE year 1*SPACE weekday	; 12 21 2012 Fri
date =/ month 1*SPACE day 1*SPACE weekday 1*SPACE year	; 12 21 Fri 2012
date =/ month 1*SPACE weekday 1*SPACE day 1*SPACE year	; 12 Fri 21 2012
date =/ month '/' day					; 12/21
date =/ month '/' day 1*SPACE weekday			; 12/21 Fri
date =/ weekday 1*SPACE month '/' day			; Fri 12/21
date =/ day '.' month					; 21.12
date =/ day '.' month 1*SPACE weekday			; 21.12 Fri
date =/ weekday 1*SPACE day '.' month			; Fri 21.12
date =/ year '/' month					; 2012/12
date =/ year '/' month 1*SPACE weekday			; 2012/12 Fri
date =/ weekday 1*SPACE year '/' month			; Fri 2012/12
date =/ year '/' month 1*SPACE day			; 2012/12 21
date =/ year '/' month 1*SPACE day 1*SPACE weekday	; 2012/12 21 Fri
date =/ year '/' month 1*SPACE weekday 1*SPACE day	; 2012/12 Fri 21
date =/ weekday 1*SPACE year '/' month 1*SPACE day	; Fri 2012/12 21
date =/ day 1*SPACE year '/' month			; 21 2012/12
date =/ day 1*SPACE year 1*SPACE month '/' weekday	; 21 2012/12 Fri
date =/ day 1*SPACE weekday 1*SPACE year '/' month	; 21 Fri 2012/12
date =/ weekday 1*SPACE day 1*SPACE year '/' month	; Fri 21 2012/12
date =/ year '/' month '/' day				; 2012/12/21
date =/ year '/' month '/' day 1*SPACE weekday		; 2012/12/21 Fri
date =/ weekday 1*SPACE year '/' month '/' day		; Fri 2012/12/21
date =/ year 1*SPACE month '/' day			; 2012 12/21
date =/ year 1*SPACE month '/' day 1*SPACE weekday	; 2012 12/21 Fri
date =/ year 1*SPACE weekday 1*SPACE month '/' day	; 2012 Fri 12/21
date =/ weekday 1*SPACE year 1*SPACE month '/' day	; Fri 2012 12/21
date =/ day '.' month '.' year				; 21.12.2012
date =/ day '.' month '.' year 1*SPACE weekday		; 21.12.2012 Fri
date =/ weekday 1*SPACE day '.' month '.' year		; Fri 21.12.2012

; Decimal year from range 1970-2999

year =  "19" ('7' / '8' / '9') DIGIT
year =/ '2' 3DIGIT

; Decimal month optionally zero-padded to 2-digit form

month = ['0'] natural / '1' ['0' / '1' / '2']

; Non-zero digit (1-9)

natural = '1' / '2' / '3' / '4' / '5' / '6' / '7' / '8' / '9'

; Literal month optionally abbreviated to 3-letter form

monthname =  "Jan" ["uary"]
monthname =/ "Feb" ["ruary"]
monthname =/ "Mar" ["ch"]
monthname =/ "Apr" ["il"]
monthname =/ "May"
monthname =/ "Jun" ["e"]
monthname =/ "Jul" ["y"]
monthname =/ "Aug" ["ust"]
monthname =/ "Sep" ["tember"]
monthname =/ "Oct" ["ober"]
monthname =/ "Nov" ["ember"]
monthname =/ "Dec" ["ember"]

; Day optionally zero-padded to 2-digit form

day =  ['0'] '1' / '2' / '3' / '4' / '5' / '6' / '7' / '8' / '9'
day =/ ('1' / '2') DIGIT
day =/ '3' ('0' / '1)

; Literal day of week (optionally abbreviated to three letters)

weekday =  "Sun" ["day"]
weekday =/ "Mon" ["day"]
weekday =/ "Tue" ["day"]
weekday =/ "Wed" ["nesday"]
weekday =/ "Thu" ["rsday"]
weekday =/ "Fri" ["day"]
weekday =/ "Sat" ["urday"]