・ 音 キ,ゴ
Sino-Vietnamese: kỳ
月 (moon) for meaning, 其 for sound: spans of time were counted by the moon's cycle. A period, a term, a fixed date.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
試験の期間は一週間です。 (しけんのきかんはいっしゅうかんです)
The exam period is one week.