server/data/hour_heatmap.json

{
  "_meta": {
    "description": "7×24 engagement multiplier grid (day_of_week × hour). 1.0 = platform-wide average. Sources: Buffer 2026 (9.6M posts), Sprout Social 2026 (2B engagements, 307K profiles). Days: 0=Mon..6=Sun. Hours: 0-23 local time.",
    "methodology": "Buffer identified per-day best hours; Sprout provided per-industry peak windows. Cross-referenced: peaks where both agree get 1.3-1.5×; dead zones where both agree get 0.3-0.5×. Intermediate hours interpolated."
  },
  "grid": {
    "0": [0.30, 0.25, 0.25, 0.25, 0.30, 0.35, 0.50, 0.65, 0.80, 0.90, 0.95, 1.00, 1.05, 1.10, 1.20, 1.15, 1.10, 1.05, 1.20, 1.30, 1.25, 1.15, 1.00, 0.60],
    "1": [0.30, 0.25, 0.25, 0.25, 0.30, 0.35, 0.50, 0.70, 0.85, 0.95, 1.05, 1.10, 1.20, 1.35, 1.40, 1.35, 1.25, 1.20, 1.30, 1.35, 1.25, 1.10, 0.95, 0.55],
    "2": [0.30, 0.25, 0.25, 0.25, 0.30, 0.35, 0.55, 0.75, 0.95, 1.05, 1.10, 1.15, 1.35, 1.45, 1.45, 1.40, 1.30, 1.25, 1.40, 1.45, 1.40, 1.30, 1.10, 0.60],
    "3": [0.30, 0.25, 0.25, 0.25, 0.30, 0.35, 0.55, 0.80, 1.05, 1.25, 1.15, 1.10, 1.30, 1.35, 1.30, 1.20, 1.10, 1.05, 1.15, 1.20, 1.10, 1.00, 0.85, 0.50],
    "4": [0.30, 0.25, 0.25, 0.25, 0.30, 0.35, 0.50, 0.60, 0.70, 0.75, 0.80, 0.80, 0.85, 0.85, 0.80, 0.75, 0.70, 0.65, 0.70, 0.75, 0.70, 0.80, 0.85, 0.50],
    "5": [0.30, 0.25, 0.25, 0.25, 0.30, 0.30, 0.40, 0.45, 0.50, 0.55, 0.60, 0.60, 0.65, 0.65, 0.60, 0.55, 0.55, 0.50, 0.55, 0.60, 0.65, 0.75, 0.80, 0.50],
    "6": [0.30, 0.25, 0.25, 0.25, 0.30, 0.30, 0.40, 0.50, 0.55, 0.60, 0.65, 0.70, 0.70, 0.70, 0.65, 0.60, 0.55, 0.55, 0.60, 0.70, 0.80, 0.85, 0.80, 0.55]
  }
}