Assertion: summer solstice | /r/CapableOf | mark first day of summer
Facets:
value: in the northern hemisphere
type: LOCATION
Source sentences:
text: The summer solstice marks the first day of summer, creating the longest day and shortest night of the year here in the Northern Hemisphere, while our Southern Hemisphere counterpart celebrates the winter solstice.
text: The summer solstice arrives Thursday, June 21, at 6:07 a.m. EDT, marking the first day of summer in the Northern Hemisphere.
text: This year, the summer solstice falls on June 21 and marks the first day of summer.