Traa Cho-chadjin Cho-oardit

She Traa Cho-chadjin Cho-oardit ny UTC y bun-stundayrt t'er y chorys traa shivoil ta reirey as curmaghey cluig as traa. T'eh çheusthie jeh un tootçhey jeh'n traa ghreiney veanagh (lheid as UT1) ec y dowan-lhiurid 0° (ec Linney Vunlaa Ogheragh yn IERS ta ymmydit jiu myr y vun-linney vunlaa). Cha nel eh goll er co-chiartaghey da traa hashtee hollys y laa. Ayns bree, t'eh geiyrt er Traa Vean Greenwich (GMT).

Kianglaghyn magh
 Traa UTC roie
 Meenaghey Traa Cho-chadjin Cho-oardit 'sy leigh Ghermaanagh–ZeitG §1 (3)
 W3C Sonreeaght bentyn rish Date as Traa UTC as , bunnit er ISO 8601
 Meenaghey stundayrt y traa: UTC, GPS, LORAN as TAI

Ronney:Moyllaghtyn ITU-R
Ronney:Scaaillaghyn traa