son las seis

it's six o'clock

→ ser
phrase Rare #28,242
it's six o'clock Used to tell the time. For times other than one o’clock, Spanish uses plural forms such as son las seis. The verb changes with tense: eran las seis means “it was six o’clock.”
SP: Son las seis de la tarde.
EN: It's six o'clock in the afternoon.

Son las seis y no es domingo.

It’s six o’clock, and it isn’t Sunday.

— Taxi Express (1998)

Ya son las seis en punto.

It’s six o’clock already.

Son las seis menos cinco.

It’s five to six.

Son las seis de la mañana.

It's six in the morning.

Son las seis.

It's six o'clock.

Ya son las seis.

It's already six o'clock.

— Comer, beber, amar (1994)

Ya casi son las seis.

It’s almost six o’clock.

Son las seis y cinco.

It’s five past six.