How many time zones do you cross when flying from the UK to Mexico?

When flying from the UK to Mexico, you typically cross five time zones. The UK is in the Greenwich Mean Time (GMT) zone, while Mexico spans multiple time zones, from GMT-6 to GMT-8, depending on the destination. For example, flying to Mexico City, which is in the Central Standard Time zone (GMT-6), would mean crossing five hours back. However, it's essential to consider daylight saving time changes, which can affect the exact number of time zones crossed.