Date and Time Processing Gems

#	Total Rank	Daily Rank	Name	Summary
1	13	14	tzinfo	TZInfo provides access to time zone data and allows times to be converted using time zo...
2	406	611	chronic	Chronic is a natural language date/time parser written in pure Ruby.
3	598	467	ice_cube	ice_cube is a recurring date library for Ruby. It allows for quick, programatic expans...
4	1,169	577	groupdate	The simplest way to group temporal data
5	1,235	984	business_time	Have you ever wanted to do things like "6.business_days.from_now" and have weekends and...
6	1,668	976	validates_timeliness	Adds validation methods to ActiveModel for validating dates and times. Works with multi...
7	2,063	2,267	american_date	American style month/day/year date parsing for ruby 1.9+
8	2,257	1,546	local_time	Rails engine for cache-friendly, client-side local time
9	3,167	3,146	time_diff	It returns a hash file with the difference in terms of year, month, week, day, hour, mi...
10	3,365	2,232	working_hours	A modern ruby gem allowing to do time calculation with working hours.
11	3,376	3,137	biz	Time calculations using business hours.
12	4,341	3,094	montrose	A library for specifying, quering, and enumerating recurring events for calendars in Ruby.
13	4,505	4,018	recurrence	A simple library to handle recurring events
14	5,653	3,817	by_star	ActiveRecord and Mongoid extension for easier date scopes and time ranges
15	10,633	10,491	jekyll-timeago	A Ruby library to compute distance of dates in words. Originally built for Jekyll, as a...
16	13,357	28,714	opening_hours_converter	Datetime range to opening hours, opening hours to datetime range. Very strongly inspire...
17	18,039	41,131	time-lord	Managing concepts of time and space in Ruby
18	29,147	34,763	runt	Runt is a Ruby implementation of temporal patterns by Martin Fowler. Runt provides an A...
19	131,744	89,752	yymmdd	Tiny DSL for idiomatic parsing and formatting of numeric date components.