herald
Definition
A person or event that announces or signals the approach of something; to announce the arrival of something.
हिन्दी किसी चीज के आगमन की घोषणा करने वाला व्यक्ति या घटना; किसी चीज के आगमन की घोषणा करना।
Example
"The first flowers of spring are often seen as heralds of warmer days."