The word "niday" is spelled with the consonant cluster /nd/ at the beginning, which can be tricky to pronounce for non-native speakers. In IPA phonetic transcription, this cluster is represented by the symbol /nd/, which indicates that the tongue must make contact twice, once for /n/ and once for /d/. The vowel sound in "niday" is a short /ɪ/, as in "sit", and the stress falls on the first syllable. With practice, the spelling and pronunciation of "niday" can become more familiar and easier to remember.