Elements

Repeater

January, February, etc. Monday, Tuesday, etc. Days Day of week Hours - 5:00PM

Grabber

last, this, next

Pointer

past, future, in, from

Scalar

Numbers, 1-31, 1-12, etc

Ordinal

1st, 2nd, 3rd, etc.

Separator

, / - etc.

TimeZone

IST, GMT, etc.

TODOs

Regex (foo|bar) in SLIME

Bug in test_offset of test_RepeaterFortnight.rb

Handle ambiguous times (12:34, etc.)