It's "ding4 qi1" in Mandarin:) It seems it is "ding4 qi2" in Taiwanese Mandarin (not Taiwanese), but I am not quite sure:p

"期"is the second tone, so it should be pronounced as ding4 qi2.

it's "ding4 qi1",add me as a QQ contact,i can read it for you.my QQ number is 370084168

dìng-qī

ding4 qi1