LMT

Units & Measurements abbreviation · Time Zone

LMT
Stands forLocal mean time
CategoriesUnits & Measurements

LMT stands for Local mean time, a time zone abbreviation.

Mean solar time at a specific longitude, used by towns before standard time zones. Each degree of longitude shifts local mean time by four minutes, so in the 1800s neighboring cities kept slightly different clocks.

Example: Historic tide tables list high water in LMT, corrected for the harbor's longitude.

Usage notes

Railroads drove the change: US and Canadian railroads adopted standard time zones on November 18, 1883, and Congress made them law in the Standard Time Act of 1918. The IANA time zone database used by computers records an LMT offset for each region covering the period before standard time.

More time zone abbreviations

  • ICT – Indochina Time
  • IDL – International Date Line
  • IRST – Iran Standard Time
  • IST – India Standard Time
  • JST – Japan Standard Time
  • KST – Korea Standard Time
  • LT – Local time
  • MDT – Mountain Daylight Time
  • MSK – Moscow Standard Time
  • MST – Mountain Standard Time
  • MT – Mountain Time
  • NDT – Newfoundland Daylight Time

See all 64 time zone abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.