'Sojourn' is Latin for 'spend the day' — from 'dies' (day). Sibling of 'journey.' Both rooted in a day.
A temporary stay at a place; to stay somewhere temporarily.
From Old French 'sojorner' (to dwell temporarily, to stay for a while), from Vulgar Latin *subdiurnāre (to stay during the day), composed of Latin 'sub' (under, during) and 'diurnum' (the day, a day's portion), from 'diēs' (day). The PIE root is *dyew- (to shine, sky, day), the root of Latin 'dies' (day), Greek 'Zeus' (the sky god), Sanskrit 'dyaus' (sky, heaven), and English 'day' and 'deity.' A 'sojourn' is literally a 'staying under the day' — a temporary pause in a journey lasting a day or some days
'Sojourn' and 'journey' are etymological siblings — both derive from Latin 'diurnum' (day). A journey was originally a day's travel (French 'journée'), while a sojourn was a day's stay. Both words have since expanded far beyond their one-day origins, but the underlying connection to the Latin word for day