Usually from 5:30 AM (Mon–Fri) until midnight (Sat/Sun hours vary).
You must have a valid ticket or "touch on" with a Leap Card before boarding. Fare evasion can lead to a €100 fine . 💡 Travel Tips
It seems you are looking for a post related to , which most likely refers to Luas , Dublin’s light rail transit system, or perhaps a script/software file (like a .zip containing .lua scripts).