Chrono

Provides a chain of logics about chronology.

Chrono::Iterator

Parse cron syntax and determine next scheduled run.

require "chrono"

iterator = Chrono::Iterator.new("30 * * * *")
iterator.next #=> 2000-01-01 00:30:00
iterator.next #=> 2000-01-02 00:30:00
iterator.next #=> 2000-01-03 00:30:00

The following syntax is supported. See examples for more details.

• (*) Asterisk
• (,) Comma
• (-) Hyphen
• (/) Slash

* * * * *
T T T T T
| | | | `- wday --- 0 ..  6
| | | `--- month -- 1 .. 12
| | `----- day ---- 1 .. 31
| `------- hour --- 0 .. 23
`--------- minute - 0 .. 59