I marked history by the hour, yet I can't be seen. You feel my passage, but cannot touch my form. What am I?

Category: History · Difficulty: expert

Hint: Consider what moves without a trace.

Answer

A moment in time

Explanation

A moment in time signifies an event that occurs but cannot be physically grasped or seen.

This is a expert history riddle — one of the harder riddles here. The answer is A moment in time.

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