What do you call 'time' in dialect?

I've been waiting for hours at that shop, but the meal still hasn't come out.

He suffered from amnesia after the accident.

Using mnemonics, it became easier to remember new words.

Using a mnemonic, it became easier to remember new words.

How did the ancients live?

The creatures of the ancient times were significantly different from the creatures of today.

The culture of classical antiquity has a significant impact on the modern world.

The buildings of Ancient Rome still inspire many people today.

The required time from Tokyo to Osaka by Shinkansen is about two and a half hours.