org-mode计划和截止日期

The following commands allow you to quickly insert a deadline or to schedule an item:
C-c C-d (org-deadline)

Insert ‘DEADLINE’ keyword along with a stamp. The insertion will happen in the line directly following the headline. Any CLOSED timestamp will be removed. When called with a prefix arg, an existing deadline will be removed from the entry. Depending on the variable org-log-redeadline, a note will be taken when changing an existing deadline.

C-c C-s (org-schedule)

Insert ‘SCHEDULED’ keyword along with a stamp. The insertion will happen in the line directly following the headline. Any CLOSED timestamp will be removed. When called with a prefix argument, remove the scheduling date from the entry. Depending on the variable org-log-reschedule, a note will be taken when changing an existing scheduling time.
C-c / d (org-check-deadlines)

Create a sparse tree with all deadlines that are either past-due, or which will become due within org-deadline-warning-days. With C-u prefix, show all deadlines in the file. With a numeric prefix, check that many days. For example, C-1 C-c / d shows all deadlines due tomorrow.
C-c / b (org-check-before-date)

Sparse tree for deadlines and scheduled items before a given date.
C-c / a (org-check-after-date)

Sparse tree for deadlines and scheduled items after a given date.

Note that org-schedule and org-deadline supports setting the date by indicating a relative time: e.g., +1d will set the date to the next day after today, and –1w will set the date to the previous week before any current timestamp.