a haon a clog - one o' clock - 1:00
a dó a clog - two o' clock - 1:00
a trí a clog - three o' clock - 1:00
a ceathair a clog - four o' clock - 1:00
a cúig a clog - five o' clock - 1:00
a sé a clog - six o' clock - 1:00
a seacht a clog - seven o' clock - 1:00
a hocht a clog - eight o' clock - 1:00
a naoi a clog - nine o' clock - 1:00
a deich a clog - ten o' clock - 1:00
a haon déag a clog - eleven o' clock - 1:00
a dó dheag a clog - twelve o' clock - 1:00
ar maidin - in the morning
sa tráthnóna - in the afternoon
ar an oíche - at night