Want to make sure on server release time

[Rufflebottom-bloodhoof (Rufflebottom)]

New WoW Classic Realms Are Open - Monday, August 26

2019-08-26T17:00:00Z (UTC), we removed the limitation on only creating a total of three WoW Classic characters per WoW account. Now, players will be able to create up to 10 characters per Classic realm, for a total of 50 characters across all Classic realms per WoW account. Additionally, at 2019-08-26T17:00:00Z (UTC), we opened the following new realms in this region: Name Type Timezone Incendius PvP Eastern Bigglesworth PvP Pacific Old Blanchy Normal Pacific Westfall Normal East…

You can reserve more names starting at 2pm Pacific. As well, the new realms will be available for creating characters at that time.

Edit:
The bottom of the following page has a count-down to launch:

World of Warcraft®: Wrath of the Lich King® Classic™