AI overview
I don't have sufficient context provided to write an accurate overview of Greenwich Mean Time. The phrase "time standard" is too general and doesn't contain specific information about what GMT is, why it was established, or why it matters. I would need actual contextual information about Greenwich Mean Time to provide an accurate 2-sentence overview based only on that context.
AI-generated from the Wikipedia summary — may contain errors.
Article
Time in Europe:
▉▉▉▉ Pale hues: Standard time observed all year ▉▉▉ Dark hues: Daylight saving time