"Time of dere" is a period when one is in love, or feels attracted to someone. For instance, when someone falls deeply in love with a certain idol group or actor, they might post "I've entered the time of dere." During the time of dere, anything the object of affection does will conjure feelings of love in the subject. Even situations that others would find strange will make the time of dere subject fall more deeply in love...
Fangirl: "omg junkook is so fucking amazing, I think I've entered the time of dere"
Fangirl:*proceeds to ship junkook with the rest of BTS with online games*
Fangirl friend:"Ew, that's totally messed up"

This example is very broad
by Neko God May 5, 2018
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