Quicken Style keyboard shortcuts for dates

Implement Quicken's common date operators on date fields.
This is a huge time saver
Here are date shortcuts in Quicken Mac:

TaskShortcut keys
Today's date T
Increment date +
Decrement date – 
Increment 7 days . or >
Decrement 7 days , or <
First day of this Week W
Last day of this weeK K 
First day of this Month M
Last day of this month H 
First day of this Year Y
Last day of this year R