Date and Time Processing Gems

#	Total Rank	Daily Rank	Name	Summary
1	17	6	tzinfo	TZInfo provides access to time zone data and allows times to be converted using time zo...
2	219	549	chronic	Chronic is a natural language date/time parser written in pure Ruby.
3	806	481	ice_cube	ice_cube is a recurring date library for Ruby. It allows for quick, programatic expans...
4	979	866	business_time	Have you ever wanted to do things like "6.business_days.from_now" and have weekends and...
5	1,072	1,038	groupdate	The simplest way to group temporal data
6	1,167	1,687	validates_timeliness	Adds validation methods to ActiveModel for validating dates and times. Works with multi...
7	1,230	1,730	american_date	American style month/day/year date parsing for ruby 1.9
8	1,889	1,873	local_time	Rails engine for cache-friendly, client-side local time
9	2,395	4,064	time_diff	It returns a hash file with the difference in terms of year, month, week, day, hour, mi...
10	3,651	3,561	biz	Time calculations using business hours.
11	4,901	4,245	by_star	ActiveRecord and Mongoid extension for easier date scopes and time ranges
12	5,784	9,048	montrose	A library for specifying, quering, and enumerating recurring events for calendars in Ruby.
13	8,486	13,339	time-lord	Managing concepts of time and space in Ruby
14	12,001	6,055	jekyll-timeago	A Ruby library to compute distance of dates in words. Originally built for Jekyll, as a...
15	17,405	4,335	opening_hours_converter	Datetime range to openinghours, openinghours to datetime range. Very strongly inspired ...
16	117,461	137,469	yymmdd	Tiny DSL for idiomatic parsing and formatting of numeric date components.