Pre-release protocol

Revision as of 09:14, 9 August 2012 by Pdelvo (talk | contribs) (Added 12w32a)
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This page documents the changes from the last stable Minecraft release (currently 1.3.1) to the current pre-release (or weekly release).

New packets


Changed packets

Time Update (0x4)

Server to Client

Time is based on ticks, where 20 ticks happen every second. There are 24000 ticks in a day, making Minecraft days exactly 20 minutes long.

The time of day is based on the timestamp modulo 24000. 0 is sunrise, 6000 is noon, 12000 is sunset, and 18000 is midnight.

The default SMP server increments both by 20 every second.

The 'Time' is the Age of the world. It is not changing on server commands and will increased by 20 every second.

Packet ID Field Name Field Type Example Notes
0x4 Time long 45464654 The 'Age of the world', in ticks
Day Time long 21321 The world (or region) time, in ticks
Total Size: 1 Byte

Changed Data Type


Removed packets


Protocol History


  • 12w32a
  • Protocol version is now 40
  • Changed Time Update packet