How is a uniform time set at all places?

A uniform time is set at all places using time zones, which divide the Earth into regions where the same standard time is observed. The Prime Meridian in Greenwich, England, serves as the reference point (UTC or Coordinated Universal Time), with time zones defined relative to it. Adjustments are made in hourly increments west or east of this line to account for the Earth's rotation. Additionally, technologies like atomic clocks and global positioning systems help synchronize timekeeping across different regions.