time, season, era, age, period
旹 centers on the flow of time: a specific moment, a season, an era, or a period. The meanings all point to a stretch or point in time.
旹 is an ancient variant of 時 (time). It combines 㞢 (a form related to 之, possibly phonetic) with 日 (sun/day), suggesting the sun's movement marking time. The exact historical development is uncertain.
The top 㞢 looks like a sprout or a marker, and the bottom 日 is the sun. Picture a sundial where a marker's shadow moves with the sun, showing the time and season.
For ジ, imagine a giant sundial marking the time: the 'G' in giant cues ジ, and the sundial shows the era.