2025 Notable Dates
| Date | Day | Name | Type | Details |
| 01-Jan | Wednesday | New Year's Day | Bank Holiday | |
| 02-Jan | Thursday | Last day of Hanukkah | Jewish Holiday | |
| 02-Jan | Thursday | 2nd January | Local Bank Holiday | Scotland |
| 05-Jan | Sunday | Twelfth Night | Observance, Christian | |
| 06-Jan | Monday | Epiphany | Observance, Christian | |
| 07-Jan | Tuesday | Orthodox Christmas Day | Observance, Orthodox | |
| 14-Jan | Tuesday | Orthodox New Year | Observance, Orthodox | |
| 25-Jan | Saturday | Burns Night | Local Observance | Scotland |
| 27-Jan | Monday | Isra and Mi'raj | Muslim | |
| 29-Jan | Wednesday | Lunar New Year | Observance | |
| 13-Feb | Thursday | Tu B'Shevat (Arbor Day) | Jewish Holiday | |
| 14-Feb | Friday | Valentine's Day | Observance | |
| 26-Feb | Wednesday | Maha Shivaratri | Hindu Holiday | |
| 01-Mar | Saturday | Ramadan Start (Tentative Date) | Muslim | |
| 01-Mar | Saturday | St. David's Day | Local Observance | Wales |
| 04-Mar | Tuesday | Carnival / Shrove Tuesday / Pancake Day | Observance, Christian | |
| 05-Mar | Wednesday | Carnival / Ash Wednesday | Observance, Christian | |
| 14-Mar | Friday | Purim | Jewish Holiday | |
| 17-Mar | Monday | St Patrick's Day | Local Bank Holiday | NIR |
| 20-Mar | Thursday | March Equinox | Season | |
| 26-Mar | Wednesday | Laylatul Qadr (Night of Power) | Muslim | |
| 30-Mar | Sunday | Mother's Day | Observance | |
| 30-Mar | Sunday | Daylight Saving Time starts | Clock Change/Daylight Saving Time | |
| 31-Mar | Monday | Eid ul Fitr (Tentative Date) | Muslim | |
| 13-Apr | Sunday | Palm Sunday | Observance, Christian | |
| 13-Apr | Sunday | First day of Passover | Jewish Holiday | |
| 17-Apr | Thursday | Maundy Thursday | Observance, Christian | |
| 18-Apr | Friday | Orthodox Good Friday | Observance, Orthodox | |
| 18-Apr | Friday | Good Friday | Bank Holiday | |
| 19-Apr | Saturday | Holy Saturday | Observance, Christian | |
| 19-Apr | Saturday | Orthodox Holy Saturday | Observance, Orthodox | |
| 20-Apr | Sunday | Last day of Passover | Jewish Holiday | |
| 20-Apr | Sunday | Orthodox Easter | Observance, Orthodox | |
| 20-Apr | Sunday | Easter Sunday | Observance, Christian | |
| 21-Apr | Monday | Orthodox Easter Monday | Observance, Orthodox | |
| 21-Apr | Monday | Easter Monday | Common Local Holiday | ENG, NIR, WAL |
| 21-Apr | Monday | Easter Monday | Local Observance | Scotland |
| 22-Apr | Tuesday | Stephen Lawrence Day | Observance | |
| 23-Apr | Wednesday | St. George's Day | Local Observance | |
| 23-Apr | Wednesday | Shakespeare Day | Observance | |
| 25-Apr | Friday | Yom HaShoah | Jewish Commemoration | |
| 28-Apr | Monday | St. George's Day | Observance, Christian | |
| 01-May | Thursday | Yom HaAtzmaut | Jewish Holiday | |
| 05-May | Monday | Early May Bank Holiday | Bank Holiday | |
| 16-May | Friday | Lag B'Omer | Jewish Holiday | |
| 26-May | Monday | Spring Bank Holiday | Bank Holiday | |
| 29-May | Thursday | Ascension Day | Observance, Christian | |
| 02-Jun | Monday | Shavuot | Jewish Holiday | |
| 07-Jun | Saturday | Eid al-Adha (Tentative Date) | Muslim | |
| 08-Jun | Sunday | Pentecost | Observance, Christian | |
| 09-Jun | Monday | Whit Monday | Observance, Christian | |
| 15-Jun | Sunday | Trinity Sunday | Observance, Christian | |
| 15-Jun | Sunday | Father's Day | Observance | |
| 19-Jun | Thursday | Corpus Christi | Observance, Christian | |
| 21-Jun | Saturday | King's Birthday | Observance | |
| 21-Jun | Saturday | June Solstice | Season | |
| 22-Jun | Sunday | Windrush Day | Observance | |
| 27-Jun | Friday | Muharram/Islamic New Year (Tentative Date) | Muslim | |
| 06-Jul | Sunday | Ashura (Tentative Date) | Muslim | |
| 12-Jul | Saturday | Battle of the Boyne | Local Bank Holiday | NIR |
| 14-Jul | Monday | Battle of the Boyne observed | Local Bank Holiday | NIR |
| 03-Aug | Sunday | Tisha B'Av | Jewish Holiday | |
| 04-Aug | Monday | Summer Bank Holiday | Local Bank Holiday | Scotland |
| 15-Aug | Friday | Assumption of Mary | Observance, Christian | |
| 15-Aug | Friday | Janmashtami (Smarta) | Hindu Holiday | |
| 16-Aug | Saturday | Janmashtami | Hindu Holiday | |
| 25-Aug | Monday | Summer Bank Holiday | Common Local Holiday | ENG, NIR, WAL |
| 26-Aug | Tuesday | Ganesh Chaturthi | Hindu Holiday | |
| 05-Sep | Friday | Milad un Nabi (Mawlid) (Tentative Date) | Muslim | |
| 22-Sep | Monday | September Equinox | Season | |
| 23-Sep | Tuesday | Rosh Hashana | Jewish Holiday | |
| 02-Oct | Thursday | Yom Kippur | Jewish Holiday | |
| 04-Oct | Saturday | Feast of St Francis of Assisi | Observance, Christian | |
| 07-Oct | Tuesday | First day of Sukkot | Jewish Holiday | |
| 13-Oct | Monday | Hoshana Rabbah | Jewish Holiday | |
| 14-Oct | Tuesday | Shemini Atzeret | Jewish Holiday | |
| 15-Oct | Wednesday | Simchat Torah | Jewish Holiday | |
| 21-Oct | Tuesday | Diwali/Deepavali | Hindu Holiday | |
| 26-Oct | Sunday | Daylight Saving Time ends | Clock Change/Daylight Saving Time | |
| 31-Oct | Friday | Halloween | Observance | |
| 01-Nov | Saturday | All Saints' Day | Observance, Christian | |
| 02-Nov | Sunday | All Souls' Day | Observance, Christian | |
| 05-Nov | Wednesday | Guy Fawkes Day | Observance | |
| 09-Nov | Sunday | Remembrance Sunday | Observance | |
| 30-Nov | Sunday | First Sunday of Advent | Observance, Christian | |
| 30-Nov | Sunday | St Andrew's Day | Local Bank Holiday | Scotland |
| 01-Dec | Monday | St Andrew's Day observed | Local Bank Holiday | Scotland |
| 08-Dec | Monday | Feast of the Immaculate Conception | Observance, Christian | |
| 15-Dec | Monday | First Day of Hanukkah | Jewish Holiday | |
| 21-Dec | Sunday | December Solstice | Season | |
| 22-Dec | Monday | Last day of Hanukkah | Jewish Holiday | |
| 24-Dec | Wednesday | Christmas Eve | Observance, Christian | |
| 25-Dec | Thursday | Christmas Day | Bank Holiday | |
| 26-Dec | Friday | Boxing Day | Bank Holiday | |
| 31-Dec | Wednesday | New Year's Eve | Observance |