4 queries with a date column

I have 4 queries that have a date column. I need to output to a table sorted by date desc.

But the dates that need to be sorted are from the 4 queries.

Its not a good candidate for  UNION as each query has different columns, like this

Query 1

name - address -city -date

Query 2

col a- col b- Date

Query 3

col d col E- Date

Query 4

col d -col e- col f   - Date

Anysuggestionss?