Master of the Turbulent Timeways IV

I don't know if you know this, but if you do all the four dungeons with one character in the first week and you stay with the buff and don't log in with that character till the next week, you'll retain the Mastery Timeways buff, and in the next week the first dungeon you do will count towards the Master of the Turbulent Timeways achievement as if you had done all four dungeons.
Conclusion... keep the buff and you only have to do a single dungeon each week.
Did this in the last MOTTT achievment.

Turbulent Timeways Schedule

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• December 2 - Shadowlands
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• December 9 - Mists of Pandaria
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• December 16 - Classic
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• December 23 - Legion
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• December 30 - Cataclysm
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• January 6 - The Burning Crusade
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• January 13 - Warlords of Draenor
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• January 20 - Battle for Azeroth
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• January 27 - Wrath of the Lich King
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• February 3 - Shadowlands
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New Shadowlands Timewalking Dungeons

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• The Necrotic Wake
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• Spires of Ascension
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• Plaguefall
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• Halls of Atonement
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• De Other Side
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• Sanguine Depths
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New Vendor Items added with Shadowlands:
[item=258515] [item=259463] [item=257511]
[item=257514] [item=257516] [item=257513]
[item=256881] [item=256893] [item=254876]

To get this achievement, do four timewalking dungeons in a row, and then wait a week and do that same thing again four more times by February 10th, 2026.

This means that if it is Januray 13th, 2026, or later, and you haven't started, YOU'RE TOO LATE.

To get the [spell=423861] buff, simply do four timewalking dungeons in a row.

Each timewalking dungeon awards one application of the lesser buff: [spell=423860]

The lesser buff lasts for two hours, meaning that even if ques are long and you maybe miss a que pop, or get kicked because your cat got on your keyboard and made you do unspeakable things like disengage off the edge or pull a pat and then your party didn't believe you were possessed by cat demons, you still have two hours to complete the next one.

After getting the initial buff and then stacking it three more times, you will gain [spell=423861] and if you do this for five weeks you'll get [item=254694] and be able to pick a mount.

Here is the one you want:
[item=257511]
And here's some flies and gargoyles and random crud you can pick instead if you hate your character:
[item=257514]
[item=257516]
[item=257513]

Some people are saying you can get all four mounts if you can solo the dungeons by parking trial accounts at the entrance. I admit I'm not sure how this works and why having a trail account with the Aquilon would help you get it on your main when you already picked the Wilderling.