I think it's a moth and need further identification like scientific name, order and family.
The picture was taken on May 30/2016 in my university laboratory window in South Korea. At that time there were so many moths on this building. The temperature was also high and it was also daytime around lunch time. What I want to ask related to flying time is do moths fly at daytime? as far as I know moths are nocturnal. Please clarify this too if this insect species is moth.
Temperature was high
... high for where? Alsodo moths fly in the daytime
is a seperate question, as isare all moths nocturnal
. $\endgroup$in my university laboratory window
is not helpful at all. I would also strongly suggest you take the tour and read carefully through the help center to learn more about the site. Editing of questions (and answers) is encouraged, subject to some guidelines. You should also read this Meta.SE question, especially the section Editing and Formatting. $\endgroup$