BST/BDT Bering, CAT/CAST Central Africa, CET/CEST/CEMT Central European, ChST Chamorro, CST/CDT/CWT/CPT/CDDT Central [North America], CST/CDT China, GMT/BST/IST/BDST Greenwich, EAT East Africa, EST/EDT/EWT/EPT/EDDT Eastern [North America], EET/EEST Eastern European,
HST/HDT/HWT/HPT Hawaii, HKT/HKST Hong Kong, IST India, IST/GMT Irish, IST/IDT/IDDT Israel, JST/JDT Japan, KST/KDT Korea, MET/MEST Middle European (a backward-compatibility alias for Central European), MSK/MSD Moscow,
</p> </section> <section> <h2 id="planets">Time and time zones on other planets</h2> <p> Some people's work schedules use <a href="https://en.wikipedia.org/wiki/Timekeeping_on_Mars">Mars time</a>. Jet Propulsion Laboratory (JPL) coordinators kept Mars time on and off during the
Pathfinder</a> mission. Some of their family members also adapted to Mars time. Dozens of special Mars watches were built for JPL workers who kept Mars time during the Mars Exploration Rovers mission (2004). These timepieces look like normal Seikos and Citizens but use Mars seconds rather than terrestrial seconds. </p> <p> A Mars solar day is called a "sol" and has a mean period equal to
equals about 1.02749125 terrestrial seconds. </p> <p> The <a href="https://en.wikipedia.org/wiki/Prime_meridian">prime meridian</a> of Mars goes through the center of the crater <a href="https://en.wikipedia.org/wiki/Airy-0">Airy-0</a>, named in honor of the British astronomer who built the Greenwich telescope that defines Earth's prime meridian. Mean solar time on the Mars prime meridian is
Coordinated Time (<abbr>MTC</abbr>).
</p> <p> Each landed mission on Mars has adopted a different reference for solar timekeeping, so there is no real standard for Mars time zones. For example, the <a href="https://en.wikipedia.org/wiki/Mars_Exploration_Rover">Mars Exploration Rover</a> project (2004) defined two time zones "Local Solar Time A" and "Local Solar Time B" for its two missions, each zone designed so that its time equals local true solar time at