I might add some more sorting options in the future, although it can already filter by date range.

All posts created today:
created:2017-06-25
All posts created in June 2017:
created:[2017-06-01 TO 2017-06-30]

Also just created this tool which supports reverse chronological:
https://steemit.com/asksteem/@thekyle/asksteem-user-explorer