Date

<=> & compare_without_coercion & compare_with_coercion

acts_like_date?

blank?

advance

ago
since & in

at_beginning_of_day & beginning_of_day & midnight & at_midnight

at_end_of_day & end_of_day

midday & noon & at_midday & at_noon & middle_of_day

at_middle_of_day

beginning_of_week
beginning_of_week=
change
current

find_beginning_of_week!

inspect
default_inspect
readable_inspect

to_default_s
to_formatted_s
to_s

to_time
tomorrow
xmlschema
yesterday

plus_with_duration & + & plus_with_duration

minus_without_duration & - & minus_with_duration