School Block Tracker
Live clock, auto class switching, countdowns, per‑grade schedules, JSON editor (localStorage)
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00:00:00
State: —
Time Zone: —
Current Block
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Time Elapsed
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Time Left
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Next Block
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Starts In
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Today's Schedule
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Block Time Length Status
Tips
Press G to open schedule editor. Press N for "Now". The schedule is stored in localStorage. Format supports per‑grade schedules or a single default schedule.
Edit Schedule (JSON)
Weekdays use ISO numbers (1=Mon..5=Fri). Provide either weekdays at the root (applies to all grades) or a grades object with per‑grade weekdays.
Examples: 
// Single schedule for everyone
{
  "meta": { "school": "Demo High", "version": 1 },
  "weekdays": {
    "1": [
      { "name": "A Block", "start": "08:00", "end": "08:50" },
      { "name": "Passing", "start": "08:50", "end": "09:00", "type": "passing" },
      { "name": "B Block", "start": "09:00", "end": "09:50" }
    ],
    "2": "copy:1", "3": "copy:1", "4": "copy:1", "5": "copy:1"
  }
}

// Per‑grade schedules
{
  "meta": { "school": "Demo High", "version": 1 },
  "grades": {
    "1": { "weekdays": { "1": [ { "name": "ELA", "start":"08:00", "end":"08:45" } ], "2":"copy:1", "3":"copy:1", "4":"copy:1", "5":"copy:1" } },
    "6": { "weekdays": { "1": [ { "name": "Math", "start":"08:00", "end":"08:50" } ], "2":"copy:1", "3":"copy:1", "4":"copy:1", "5":"copy:1" } }
  }
}