sql, merge two tables (nothing in common)

hello,

we have two different tables, with fields: date, name event, ....

one table = events
one table = seminars


how can we, combine those, in a query to obtain a list, ordered by date


exemple:

table event, contains:

idevent 1 date 1/01/2013 name: test event
idevent 2 date 2/02/2013 name: test event 2

table seminar, contains:

idseminar 1 date 15/01/2013 name= seminar 1


the result in my webpage should be:


idevent 1 date 1/01/2013 name: test event
idseminar 1 date 15/01/2013 name= seminar 1
idevent 2 date 2/02/2013 name: test event 2



how can we do this, someone any ideas? thx in advance

kristof