9:00-9:59 NY Range -> 10:00-11:00 Lines (v6)

//version=6
indicator("9:00-9:59 NY Range -> 10:00-11:00 Lines (v6)", overlay=true, max_lines_count=500)

// --- state vars ---
var float sessionHigh = na
var float sessionLow = na

var line hiLine = na
var line loLine = na
var line v10 = na
var line v11 = na

// --- New York time ---
t_ny = time("America/New_York")
hr = hour(t_ny)
mn = minute(t_ny)

// --- reset / clear at 16:00 (4 PM NY) ---
if hr == 16 and mn == 0
sessionHigh := na
sessionLow := na
if not na(hiLine)
line.delete(hiLine)
hiLine := na
if not na(loLine)
line.delete(loLine)
loLine := na
if not na(v10)
line.delete(v10)
v10 := na
if not na(v11)
line.delete(v11)
v11 := na

// --- accumulate 9:00 - 9:59 NY range ---
if hr == 9
if mn == 0
sessionHigh := high
sessionLow := low
else
sessionHigh := na(sessionHigh) ? high : math.max(sessionHigh, high)
sessionLow := na(sessionLow) ? low : math.min(sessionLow, low)

// --- at 10:00 NY: draw horizontal lines (start) and vertical dashed at 10:00 ---
if hr == 10 and mn == 0
// delete previous day's horizontal lines if any
if not na(hiLine)
line.delete(hiLine)
hiLine := na
if not na(loLine)
line.delete(loLine)
loLine := na

hiLine := line.new(bar_index, sessionHigh, bar_index, sessionHigh, color=color.red, width=1, extend=extend.none)
loLine := line.new(bar_index, sessionLow, bar_index, sessionLow, color=color.red, width=1, extend=extend.none)

if not na(v10)
line.delete(v10)
v10 := na
v10 := line.new(bar_index, low, bar_index, high, color=color.red, width=1, style=line.style_dashed)

// --- at 11:00 NY: draw vertical dashed at 11:00 ---
if hr == 11 and mn == 0
if not na(v11)
line.delete(v11)
v11 := na
v11 := line.new(bar_index, low, bar_index, high, color=color.red, width=1, style=line.style_dashed)

// --- extend the horizontal lines forward every bar, but only until 11:00 ---
if hr < 11
if not na(hiLine)
line.set_x2(hiLine, bar_index)
if not na(loLine)
line.set_x2(loLine, bar_index)

// --- required output so script compiles (hidden) ---
plot(na)