2024-04-28 17:10:04 +01:00
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---
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id: l29u
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title: Time_and_computers
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tags: []
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2024-04-28 17:20:06 +01:00
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created: Sunday, April 28, 2024
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2024-04-28 17:10:04 +01:00
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---
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2024-04-28 17:20:06 +01:00
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2024-04-28 17:10:04 +01:00
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# Time_and_computers
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2024-04-28 17:20:06 +01:00
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## Epochs and Unix Time
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An epoch is a period of time identified by a starting point.
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The standard epoch for measuring against is known colloqially as "Unix Time":
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midnight on 1st January 1970. Unix time is the number of seconds that have
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elapsed since this point. This is the standard for Windows and most unix
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systems.
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2024-04-28 17:10:04 +01:00
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2024-04-28 17:20:06 +01:00
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For example midnight on 2nd January 1970 would be 86400 seconds since the epoch.
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The deduction is as follows:
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2024-04-28 17:10:04 +01:00
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2024-04-28 17:20:06 +01:00
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```
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60 * 60 * 24 = 86400
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```
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2024-04-28 17:10:04 +01:00
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2024-04-28 17:20:06 +01:00
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We are multiplpying the number of seconds in a minute by the number of minutes
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in an hour by the number of hours in a day.
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