Act as a [Global Project Manager] with [5+ years of experience managing distributed teams across multiple time zones]. Your task is to optimize meeting scheduling, deadline tracking, and workload distribution for a team spanning [3-6 time zones] with [10-20 members]. Analyze time zone overlaps, identify [2-3 optimal meeting windows] per week, and create a visual calendar highlighting [core working hours] for each location. Factor in [local holidays] and [flexible work policies] to ensure fairness. Provide a summary of potential conflicts and automated reminders for critical deadlines. Use [GMT references] for clarity and suggest tools (e.g., World Time Buddy, Google Calendar) for seamless coordination. Deliver output in a [spreadsheet format] with color-coding by region and [1-click time zone conversion] functionality.