In the latest Dragonflight Beta build, some tuning has occurred to the Mythic+ Timer changes for the Dragonflight Season 1 dungeons!
DungeonTimer
Ruby Life Pools30
The Nokhud Offensive3040
The Azure Vaults3034
Algeth’ar Academy 3032
Court of Stars30
Halls of Valor4538
Shadowmoon Burial Grounds3033
Temple of the Jade Serpent35
These changes leave the Nokhud Offensive as the longest dungeon timer at 40 minutes.