Festival at Fushimi Inari Shrine (2014)

I just found out about Yoi-miya and Motomiya Festival at Fushimi Inari Shrine on this web site.

http://www.kyotoguide.com/ver2/event/event%20archive7-.htm

they say it will happen on 20-21 of July but I can't find any other information on any other site.

Will the festival take place at the same time this year? (2014)

Should I go there in the evening?

I found the information about the festival on the web site of the shrine. The schedule of this year, Yoi-miya is carried on July 19, Motomiya Festival is carried out on July 20.
http://inari.jp/rite/?month=7%E6%9C%88 (Japanese)

I can not read Japanese but it Seem like the lantern lighting happen on 19 july(18.00)

What event take place 20 july(9.00) then?

It is correct you've written.
The festival will start at 18:00 in the 19th, it will start at 9:00 in the 20th.