度
たび · tabi · JLPT N3 · noun
happening
tabi sounds like tabby: each time the tabby cat visits, count one 度
Read as たび, 度 marks an occasion, as in この度 (on this occasion) and 行くたびに (every time I go). Its other reading ど counts times too: 一度 means once and 今度 means this time or next time.
度 — 广 (shelter) + 庶 abbreviated (phonetic)
Originally depicted a hand measuring length under a shelter, meaning 'to measure' or 'a measure/standard.' From this came extended senses like 'degree,' 'extent,' and 'to pass through' (as in passing time). The reading 'dù' means degree/measure, while 'duó' preserves the older verbal sense of measuring.