A
age/7

D
day_number/4
day_of_week/2
decode_date/4
decode_datetime/7
decode_time/4

E
encode_date/4
encode_datetime/7
encode_time/2
encode_time/3
encode_time/4

F
first_week/2

L
leap_year/1
length_month/3

M
monday_of_week/3
monday_of_week/5

N
next_week/4
num_weeks_in_year/2

P
prev_week/4

R
reverse_day_number/4

S
start_of_week/3