The countdown to Longitude in Dublin's Marlay Park is well under way and now you can keep track of the stage times of all the acts with this click-on and keep schedule, which is part of the recently launched Longitude app.

Hozier, The Chemical Brothers and Alt-J are among the headline artists over the weekend and six new acts have also been added to the line up. New Jackson, Neon Wolf and Jennifer Evans will perform this weekend alongside DJs Colin Perkins, Niall D’arcy and Aaron Dempsey.

According to promoters MCD, due to studio demands to finish his album, Pusha T will be unable to perform at this year's Longitude and hopes to come back to Ireland at some stage next year.

Day tickets for Saturday of Longitude are now sold out but there are a limited amount of Weekend tickets available, alongside day tickets for Friday and Sunday. 

The official Longitude app is available now on iTunes and Android. It offers a range of features to customise your weekend including a real time News and an About page with travel, ticketing and charging information. There is also a Map feature to make stages easier to find.

Those who are snapping from their phone all weekend can see all of their photos within the app as a PhotoWall feature will collate all images using the hashtag #Longitude2015 into one place to capture all the action.