Mexico City operates on Central Standard Time (CST), which is UTC-6 during winter and Central Daylight Time (CDT), which is UTC-5 during summer. To find the current time in Mexico City, subtract 6 hours from UTC during winter months and 5 hours during summer months.

Yes, Mexico City and most of Mexico observe Daylight Saving Time. The clocks go forward 1 hour to Central Daylight Time (CDT, UTC-5) in early April and go back 1 hour to Central Standard Time (CST, UTC-6) in late October. However, some states like Sonora and Quintana Roo do not observe DST.

London (GMT/BST): Mexico City is 6 hours behind London when the UK is on GMT (winter), and 7 hours behind when the UK is on BST (summer). During Mexico's summer (when CDT is in effect), subtract 1 more hour from the difference.

New York (EST/EDT): Mexico City is 1 hour behind New York when NY is on EST (winter), and the same time when NY is on EDT (summer). During Mexico's summer (when CDT is in effect), Mexico City is the same time as NY during EDT.

Tokyo (JST): Mexico City is 15 hours behind Tokyo, as Japan Standard Time is UTC+9. During Mexico's summer (when CDT is in effect), Mexico City is 14 hours behind Tokyo.

Mexico's major cities include Guadalajara, Monterrey, Puebla, Tijuana, León, Juárez, and Cancún. Mexico City is the capital and largest city, one of the most populous metropolitan areas in the world.

Mexico City is known for its rich history, the Zócalo (main square), the National Palace, Frida Kahlo Museum, ancient Aztec ruins at Templo Mayor, world-class museums, vibrant food scene, and as a major cultural and economic center. The historic center and Xochimilco are UNESCO World Heritage Sites.