Mood: The mood of the video seems to be romantic and nostalgic, with a hint of longing. The theme appears to revolve around memories of a past love, with the title 'Main Jis Din Bhulaa Du' translating to 'The Day I Forget You'. The overall emotion conveyed is one of yearning and reminiscence.

Environment: The setting of the video appears to be an urban or cityscape, possibly in India, given the language and cultural context. The background features a warm, golden glow with hints of a cityscape, suggesting a nighttime or sunset setting. The overall aesthetic is vibrant and colorful, with a mix of modern and classic elements.