Why is 'Mon Jan 2 15:04:05 MST 2006' the Predefined Time Layout in Go?

Origin of "Mon Jan 2 15:04:05 MST 2006" in Go

In the documentation for Go's time package, a predefined layout for formatting and parsing time is provided: "Mon Jan 2 15:04:05 MST 2006." The significance of this particular date is often overlooked.

The mystery lies in the Unix time associated with the date: 1136239445. To decipher its origin, we turn to the explanation following the layout definition:

Since MST is GMT-0700, the reference time can be thought of as

01/02 03:04:05PM '06 -0700

This unravels a simple sequence:

• Day of the month (01)
• Month number (02)
• Month (Jan)
• Hour (03)
• Minute (04)
• AM/PM (PM)
• Year (06)
• Time zone offset (MST = GMT-0700)

The reference time represents 03:04 PM on January 2nd, 2006, in Mountain Standard Time (MST). It's notable that the sequence uses 03:04 PM instead of 03:04 AM to distinguish it from 15:04 in hours:minutes notation.

This carefully crafted sequence serves as a reference point for time formatting and parsing in Go. It's a reminder of the timekeeping conventions behind the scenes and the importance of capturing nuances in date and time representations.

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