It has been estimated that there are approximately 10,000 three-leaf clovers for every four-leaf clover. Traditionally it is considered good luck to find one. The first leaf is for hope, the second leaf is for faith, the third leaf is for love, and the fourth leaf, naturally, is for luck. The shamrock, an unofficial symbol of Ireland and Boston, Massachusetts, USA is a three-leaved young white clover.
Days of the week - Laethanta na Seachtaine
- Monday: An Luan
- Tuesday: An Mháirt
- Wednesday: An Chéadaoin
- Thursday: An Déardaoin
- Friday: An Aoine
- Saturday: An Satharn
- Sunday: An Domhnach.
Seasons of the yeare - Ráithí na Bliana/Na Séasúir
- Spring: An tEarrach - Spring/Vernal Equinox: LáLeathach an Earraigh
- Summer: An Samhradh - Summer Solstice: Grianstad an tSamhraidh
- Autumn: An Fómhar - Autumnal Equinox: Lá Leathach an Fhómhair
- Winter: An Gheimhreadh - Winter Solstice: Grianstad an Gheimhridh
Religious seasons - Séasúir Creidimh
- Lent: An Carghas
- Easter: Cáisc
- Advent: An Aidbhint
- Christmastide: Nollaig
- Quarter Tense: Laethanta na gCeithre Thráth
Holidays and holydays - Féilte na Bliana
- Holiday: Lá Saoire
- Public Holiday: Saoire Poiblí
- Church Holyday: Lá Saoire Eaglaise
- New Year's Eve: Oíche Chinn Bhliana
- New Year's Day: LáCaille
- The Naming and Circumcision of Jesus: Ainmniú agus Timpeallghearradh Chriost
- Twelfth Night: Oiche Chinn an Dá Lá Dhéag
- Epiphany: Nollaig Bheag or Nollaig na mBan or An Eipifáine
- The Epiphany or Manifestation of Christ to the Gentiles: An Taispeáint nó Nochtadh Chriost do na Gintlithe
- The Baptism of Our Lord: Baiste ár dTiarna
- The Conversion of Saint Paul: Tiontú Naomh Pól
- St. Brigid's Day: Lá Fhéile Bréde or Lá Feabhra
- The Presentation of Christ in the Temple: Toirbhirt Chriost sa Teampall
- The Purification of the Blessed Virgin Mary: Glanadh na Maighdine Beannaithe Muire
- St. Patrick's Day: Lá Fhéile Phádraig
- St. Joseph of Nazareth: Naomh Iosaef na Nasaire
- April Fools Day: Lá na nAmadáin
- St. John's Eve/Bonfire Night: Oéche Fhéile San Seáin
- Annunciation of the Blessed Virgin Mary: Lá Fhéile Muire san Earrach or Lá Theachtaireacht an Aingil or Sanas na Maighdine Beannaithe Muire
- May Day: Lá Bealtaine
- The Visitation of the Blessed Virgin: Cuairt na Maighdine Beannaithe
- Assumption: Lá Fhéile Muire san Fhómhar
- The Transfiguration of Our Lord: Athrú Cló ár dTiarna
- The Birth of the Blessed Virgin Mary: Breith na Maighdine Beannaithe Muire
- St. Michael and all Angels: Naomh Michil agus na hAingil uile
- Hallowe'en: Oéche Shamhna
- 1 Nov: Lá Samhna
- All Souls Day: Lá na Marbh
- Immaculate Conception: Giniúint Mhuire gan Smál
- Christmas Day: Lá Nollag
- St. Stephen's Day: Lá Fhéile Stiofáin or Lá an Dreoilín
- Holy Innocents Day: Lá na Leanai Neamhchiontacha
- St Mark the Evangelist: Lá Fhéile Naomh Marcas Soiscéalai
- Sts. Philip and James, Apostles: Lá Fhéile Naomh Pilib agus Naomh Séamas, Aspail
- St. Mathias: LáFhéile Naomh Maitias
- St. Peter: Lá Fhéile Naomh Peadar
- St. Thomas: Lá Fhéile Naomh Tomás
- St. James the Apostle: Lá Fhéile Naomh Séamas Aspal
- St. Bartholemew: Lá Fhéile Naomh Parthalán
- St. Luke the Evangelist: Lá Fhéile Naomh Lúcás Soiscéalai
- St. Matthew the Evangelist: Lá Fhéile Naomh Matha Soiscéalai
- St. John the Evangelist: Lá Fhéile Naomh Eoin Soiscéalai
- St. Andrews Day: Lá Fhéile Naomh Aindreas
- Sts. Simon and Jude: Lá Fhéile Naomh Siomón agus Naomh Iúd
Movable feasts - Na Féilte Reatha
- Advent: An Aidbhint
- Ember Days: Laethanta na Cátaoireach
- Rogation Days: Laethanta na hAichini
- Days of Fast and Abstinence: Laethanta Troscaidh agus Tréanais
- Shrove Tuesday: Máirt na hInide
- Ash Wednesday: Céadaoin an Luaithrigh
- Lent: An Carghas
- Holy Week: Seachtain na Páise
- Palm Sunday: Domhnach na Pailme or Domhnach na hImrime
- Spy Wednesday: Céadaoin an Bhraith
- Holy (Maundy) Thursday: Déardaoin Mandála [na hAithne]
- Good Friday: Aoine an Chéasta
- Holy Saturday: Oíche Cásca
- Easter Sunday: Domhnach Cásca
- Easter Monday: Luan Cásca
- Ascension Thursday: Déardaoin Deascabhála
- Corpus Christi: Déardaoin Chorp Chríost
- Pentecost Sunday: Domhnach Cincíse
- Whit Monday: Luan Cincíse