St Patrick's Day is finally here and towns and cities across Ireland are buzzing with excitement as locals and tourists come together to celebrate the country's most iconic national holiday. This year, St Patrick's Day falls on a Monday, which is a welcome break for many, as it means a day off from work and school to enjoy the celebrations. While many people will have likely stocked up in advance, those who haven't should be aware that supermarkets across the country will be operating with reduced hours today. READ MORE: Mum of schoolgirl, 11, killed in collision while exiting bus calls for new safety measures READ MORE: Couple arrested over pensioner's murder now living in a tent and claim they keep getting attacked Most shops will be open, but as it is a bank holiday, many will be opening later and closing earlier than normal. To avoid any last-minute surprises, it's best to check ahead before heading to your local store. Meanwhile shoppers are being reminded about Ireland's unique alcohol licensing laws that apply nationwide on St Patrick's Day . While alcohol is usually available from 10.30am on Mondays, the sale of alcohol is delayed until 12.30pm every March 17. This means supermarkets are only permitted to sell alcohol between 12.30pm and 10pm today, so if you're hoping to pick up some drinks for your celebrations, make sure to time your visit accordingly. To help you plan ahead, here's everything you need to know about Lidl, Dunnes, SuperValu, Aldi and Tesco's opening hours this St Patrick's Day. Dunnes Dunnes Stores are expected to follow their usual Sunday opening hours on St Patrick's Day, which for the most part are 9am until 8pm. However, these vary greatly from store to store so you can check out the official website for more information on your local supermarket. SuperValu Supervalu stores operate individual opening hours, but many are expected to follow their usual Sunday hours on St Patrick's Day. This will vary depending on location so customers are advised to check the official SuperValu website here for their local store's opening hours. Lidl Lidl is expected to be open from 9am to 9pm on St Patrick's Day, which is their usual Sunday opening hours. The supermarket usually operates their Sunday hours on bank holidays. You can check your local store here . Tesco The opening hours of Tesco shops across Ireland vary and this will be the same across St Patrick's Day. It is expected that stores will operate their usual Sunday hours on St Patrick's Day. Customers are advised to check with their local store on the online locater here for exact times across the weekend. Aldi All Aldi stores across Ireland operate their Sunday opening hours on bank holidays, which is 9am until 9pm. A spokesperson confirmed this will happen this weekend. However, customers are advised to check details of local opening hours on ALDI's website as some stores' hours may vary slightly. A spokesperson confirmed the following stores will operate different hours on St Patrick's Day: Swords, Laytown, Dunshaughlin and Mulhuddart. Sign up to our horse racing newsletter here to get news direct to your inbox.