BTC Daily 8AM Range

//version=5
indicator("BTC Daily 8AM Range", overlay=true)

// 设置时区（根据您的所在地调整）
timezone = "UTC+8"

// 判断是否在8点到次日8点之间
is_range_period = (hour(time(timezone)) >= 8) or (hour(time(timezone)) < 8)

// 获取每日8点的开盘价
var float daily_open = na
if hour(time(timezone)) == 8 and minute(time(timezone)) == 0
daily_open := open

// 计算最高价和最低价
var float daily_high = na
var float daily_low = na

if is_range_period
if na(daily_high)
daily_high := high
daily_low := low
else
daily_high := math.max(daily_high, high)
daily_low := math.min(daily_low, low)
else
daily_high := na
daily_low := na

// 绘制价格区间
bgcolor(is_range_period ? color.new(color.blue, 95) : na, title="Range Period")
plot(daily_high, color=color.green, linewidth=2, title="Daily High")
plot(daily_low, color=color.red, linewidth=2, title="Daily Low")