Tick-Tock is learned by Borya at level 17 and costs 12 MP to cast ins the NES version, 2 in the PSX, and 4 in the DS and mobile phone versions. The effect can also be generated by using the night light as before.
Tick-tock is learned by a variety of characters, and costs 4MP in all versions.
Tick-tock returns after a long absence as part of a special gimmick dungeon themed around shrines dedicated to dawn and dusk, with players of any vocation being granted access to the spell to complete the puzzles therein.
By nature of being an MMORPG, X must have all players experiencing the flow of time at the same rate, and thus Tick-tock is limited in use. The distinction of the dungeon on a programming level is that it is loaded separately from the rest of the game world and users once the player(s) elect to complete the quest related to it, allowing for time manipulation as the area necessitates.
Tick-tock is an enemy exclusive spell that appears in the 3DS version of XI. It is cast by a pallet swap of the Prestidigitator found in Trodain Castle, and has no effect in battle other than wasting the monster's turn.