Pronunciation: [kˈɔːlbde͡ɪ] (IPA)
Correct spelling for the English word "CALLBDAY" is [kˈɔːlbde͡ɪ], [kˈɔːlbdeɪ], [k_ˈɔː_l_b_d_eɪ] (IPA phonetic alphabet).
Correct spelling for CALLBDAY