| Holidays and observances name | Date | Day | Type |
| New Year’s Day | 1-Jan-20 | Wednesday | National Holiday |
| Epiphany | 6-Jan-20 | Monday | Christian |
| Orthodox Christmas Day | 7-Jan-20 | Tuesday | Orthodox |
| Orthodox New Year | 14-Jan-20 | Tuesday | Orthodox |
| Chinese New Year | 25-Jan-20 | Saturday | Observance |
| Australia Day | 26-Jan-20 | Sunday | National Holiday |
| Australia Day observed | 27-Jan-20 | Monday | National Holiday |
| | | | |
| Tu B’Shevat (Arbor Day) | 10-Feb-20 | Monday | Jewish holiday |
| Royal Hobart Regatta | 10-Feb-20 | Monday | State Holiday |
| Valentine’s Day | 14-Feb-20 | Friday | Observance |
| Carnival / Shrove Tuesday | 25-Feb-20 | Tuesday | Christian |
| Ash Wednesday | 26-Feb-20 | Wednesday | Christian |
| | | | |
| Labour Day | 2-Mar-20 | Monday | Common State holiday |
| Labour Day | 9-Mar-20 | Monday | Common State holiday |
| Eight Hours Day | 9-Mar-20 | Monday | Common State holiday |
| Adelaide Cup | 9-Mar-20 | Monday | State Holiday |
| Canberra Day | 9-Mar-20 | Monday | State Holiday |
| Purim | 10-Mar-20 | Tuesday | Jewish holiday |
| St Patrick’s Day | 17-Mar-20 | Tuesday | Observance |
| National Close the Gap Day | 19-Mar-20 | Thursday | Observance |
| March Equinox | 20-Mar-20 | Friday | Season |
| Harmony Day | 21-Mar-20 | Saturday | Observance |
| Isra and Mi’raj | 22-Mar-20 | Sunday | Muslim |
| | | | |
| Daylight Saving Time ends | 5-Apr-20 | Sunday | Clock change/Daylight Saving Time |
| Palm Sunday | 5-Apr-20 | Sunday | Christian |
| Maundy Thursday | 9-Apr-20 | Thursday | Christian |
| First day of Passover | 9-Apr-20 | Thursday | Jewish holiday |
| Good Friday | 10-Apr-20 | Friday | National Holiday |
| Holy Saturday | 11-Apr-20 | Saturday | Common State holiday |
| Easter Sunday | 12-Apr-20 | Sunday | State Holiday |
| Easter Sunday | 12-Apr-20 | Sunday | Observance |
| Easter Monday | 13-Apr-20 | Monday | National Holiday |
| Easter Tuesday | 14-Apr-20 | Tuesday | State Holiday |
| Last day of Passover | 16-Apr-20 | Thursday | Jewish holiday |
| Orthodox Good Friday | 17-Apr-20 | Friday | Orthodox |
| Orthodox Holy Saturday | 18-Apr-20 | Saturday | Orthodox |
| Orthodox Easter | 19-Apr-20 | Sunday | Orthodox |
| Orthodox Easter Monday | 20-Apr-20 | Monday | Orthodox |
| Yom HaShoah | 21-Apr-20 | Tuesday | Jewish commemoration |
| Ramadan Start | 24-Apr-20 | Friday | Muslim |
| Yom HaAtzmaut | 29-Apr-20 | Wednesday | Jewish holiday |
| | | | |
| May Day | 4-May-20 | Monday | Common State holiday |
| Labour Day | 4-May-20 | Monday | Common State holiday |
| Mother’s Day | 10-May-20 | Sunday | Observance |
| Lag B’Omer | 12-May-20 | Tuesday | Jewish holiday |
| Laylatul Qadr (Night of Power) | 19-May-20 | Tuesday | Muslim |
| Ascension Day | 21-May-20 | Thursday | Christian |
| Eid ul Fitr | 24-May-20 | Sunday | Muslim |
| National Sorry Day | 26-May-20 | Tuesday | Observance |
| Shavuot | 29-May-20 | Friday | Jewish holiday |
| Pentecost | 31-May-20 | Sunday | Christian |
| | | | |
| Whit Monday | 1-Jun-20 | Monday | Christian |
| Western Australia Day | 1-Jun-20 | Monday | Common State holiday |
| Reconciliation Day | 1-Jun-20 | Monday | State Holiday |
| Queensland Day | 6-Jun-20 | Saturday | Local observance |
| Trinity Sunday | 7-Jun-20 | Sunday | Christian |
| Queen’s Birthday | 8-Jun-20 | Monday | Common State holiday |
| Corpus Christi | 11-Jun-20 | Thursday | Christian |
| June Solstice | 21-Jun-20 | Sunday | Season |
| | | | |
| First Day of NAIDOC Week | 5-Jul-20 | Sunday | Observance |
| Tisha B’Av | 30-Jul-20 | Thursday | Jewish holiday |
| Eid ul Adha | 31-Jul-20 | Friday | Muslim |
| | | | |
| New South Wales Bank Holiday | 3-Aug-20 | Monday | State Holiday |
| Northern Territory Picnic Day | 3-Aug-20 | Monday | State Holiday |
| Royal National Agricultural Show Day Queensland | 12-Aug-20 | Wednesday | State Holiday |
| Assumption of Mary | 15-Aug-20 | Saturday | Christian |
| Muharram/Islamic New Year | 20-Aug-20 | Thursday | Muslim |
| | | | |
| Father’s Day | 6-Sep-20 | Sunday | Observance |
| Rosh Hashana | 19-Sep-20 | Saturday | Jewish holiday |
| September Equinox | 22-Sep-20 | Tuesday | Season |
| Yom Kippur | 28-Sep-20 | Monday | Jewish holiday |
| Queen’s Birthday | 28-Sep-20 | Monday | Common State holiday |
| | | | |
| First day of Sukkot | 3-Oct-20 | Saturday | Jewish holiday |
| Daylight Saving Time starts | 4-Oct-20 | Sunday | Clock change/Daylight Saving Time |
| Feast of St Francis of Assisi | 4-Oct-20 | Sunday | Christian |
| Queen’s Birthday | 5-Oct-20 | Monday | Common State holiday |
| Labour Day | 5-Oct-20 | Monday | Common State holiday |
| Hoshana Rabbah | 9-Oct-20 | Friday | Jewish holiday |
| Shemini Atzeret | 10-Oct-20 | Saturday | Jewish holiday |
| Simchat Torah | 11-Oct-20 | Sunday | Jewish holiday |
| Milad un Nabi (Mawlid) | 29-Oct-20 | Thursday | Muslim |
| Halloween | 31-Oct-20 | Saturday | Observance |
| | | | |
| All Saints’ Day | 1-Nov-20 | Sunday | Christian |
| All Souls’ Day | 2-Nov-20 | Monday | Christian |
| Recreation Day | 2-Nov-20 | Monday | State Holiday |
| Melbourne Cup Day | 3-Nov-20 | Tuesday | State Holiday |
| Remembrance Day | 11-Nov-20 | Wednesday | Observance |
| Diwali/Deepavali | 14-Nov-20 | Saturday | Observance |
| First Sunday of Advent | 29-Nov-20 | Sunday | Observance |
| | | | |
| Feast of the Immaculate Conception | 8-Dec-20 | Tuesday | Christian |
| First Day of Hanukkah | 11-Dec-20 | Friday | Jewish holiday |
| Last day of Hanukkah | 18-Dec-20 | Friday | Jewish holiday |
| December Solstice | 21-Dec-20 | Monday | Season |
| Christmas Eve | 24-Dec-20 | Thursday | Observance |
| Christmas Day | 25-Dec-20 | Friday | National Holiday |
| Boxing Day | 26-Dec-20 | Saturday | National Holiday |
| Proclamation Day | 28-Dec-20 | Monday | State Holiday |
| Christmas/Boxing Day Holiday | 28-Dec-20 | Monday | National Holiday |
| New Year’s Eve | 31-Dec-20 | Thursday | Observance |
