> ## Documentation Index
> Fetch the complete documentation index at: https://terminal.incrypto.ru/llms.txt
> Use this file to discover all available pages before exploring further.

# Session Levels

> Previous session high/low/open levels for daily, weekly, and monthly periods.

# Session Levels

Session Levels draws **horizontal lines at the previous session's high, low, and open prices** for daily, weekly, and monthly periods. These levels are among the most universally watched reference points in trading — they represent concrete prices where the market previously found supply (highs) or demand (lows), and they often act as support, resistance, or breakout triggers in the current session.

## How It Works

At the start of each session period (day, week, month), the indicator records the high, low, and open from the **previous** completed period and draws them as horizontal lines extending into the current session:

* **Previous Day High (PDH)**: The highest price reached during the prior trading day.
* **Previous Day Low (PDL)**: The lowest price reached during the prior trading day.
* **Previous Day Open (PDO)**: The opening price of the prior trading day.
* **Previous Week High (PWH)**: The highest price during the prior calendar week.
* **Previous Week Low (PWL)**: The lowest price during the prior calendar week.
* **Previous Month High (PMH)**: The highest price during the prior calendar month.
* **Previous Month Low (PML)**: The lowest price during the prior calendar month.

These levels remain static throughout the current period and update when a new period begins.

### Indicator Type

**Overlay** — Session levels are drawn as horizontal lines directly on the price chart.

## Settings

### Visibility Controls

| Parameter         | Type    | Default | Description                                                                         |
| ----------------- | ------- | ------- | ----------------------------------------------------------------------------------- |
| `showDayLevels`   | boolean | `true`  | Show previous day high, low, and (optionally) open.                                 |
| `showWeekLevels`  | boolean | `true`  | Show previous week high and low.                                                    |
| `showMonthLevels` | boolean | `true`  | Show previous month high and low.                                                   |
| `showOpenLevels`  | boolean | `true`  | Show the open price for each enabled period. When `false`, only high/low are drawn. |

### Daily Level Styling

| Parameter          | Type   | Default   | Description                                |
| ------------------ | ------ | --------- | ------------------------------------------ |
| `dayHighColor`     | color  | `#22c55e` | Color for the previous day high line.      |
| `dayLowColor`      | color  | `#ef4444` | Color for the previous day low line.       |
| `dayOpenColor`     | color  | `#f59e0b` | Color for the previous day open line.      |
| `dayLineThickness` | number | 1.0       | Line thickness in pixels for daily levels. |
| `dayLineStyle`     | select | `dash`    | Line style: `solid`, `dash`, `dot`.        |

### Weekly Level Styling

| Parameter           | Type   | Default   | Description                                                                                                |
| ------------------- | ------ | --------- | ---------------------------------------------------------------------------------------------------------- |
| `weekHighColor`     | color  | `#3b82f6` | Color for the previous week high line.                                                                     |
| `weekLowColor`      | color  | `#8b5cf6` | Color for the previous week low line.                                                                      |
| `weekOpenColor`     | color  | `#06b6d4` | Color for the previous week open line.                                                                     |
| `weekLineThickness` | number | 1.5       | Line thickness in pixels for weekly levels. Thicker than daily by default to indicate higher significance. |
| `weekLineStyle`     | select | `dash`    | Line style: `solid`, `dash`, `dot`.                                                                        |

### Monthly Level Styling

| Parameter            | Type   | Default   | Description                                                                             |
| -------------------- | ------ | --------- | --------------------------------------------------------------------------------------- |
| `monthHighColor`     | color  | `#ec4899` | Color for the previous month high line.                                                 |
| `monthLowColor`      | color  | `#f97316` | Color for the previous month low line.                                                  |
| `monthOpenColor`     | color  | `#14b8a6` | Color for the previous month open line.                                                 |
| `monthLineThickness` | number | 2.0       | Line thickness in pixels for monthly levels. Thickest to indicate highest significance. |
| `monthLineStyle`     | select | `solid`   | Line style: `solid`, `dash`, `dot`.                                                     |

### Text Labels

| Parameter       | Type   | Default | Description                                       |
| --------------- | ------ | ------- | ------------------------------------------------- |
| `textSizeDay`   | number | 10      | Font size for daily level labels (PDH, PDL, PDO). |
| `textSizeWeek`  | number | 11      | Font size for weekly level labels (PWH, PWL).     |
| `textSizeMonth` | number | 12      | Font size for monthly level labels (PMH, PML).    |

<Tip>
  Use progressively thicker lines and larger text for higher-timeframe levels (daily → weekly → monthly). This creates a visual hierarchy where the most important levels stand out immediately.
</Tip>

## Interpretation

### Previous Day High and Low

The previous day high (PDH) and low (PDL) are the most frequently referenced session levels:

**Breakout signals:**

* Price breaking above PDH = daily range expansion to the upside. Buyers are willing to pay more than yesterday's maximum.
* Price breaking below PDL = daily range expansion to the downside. Sellers are pushing below yesterday's minimum.

**Reversal signals:**

* Price approaching PDH and rejecting = supply zone. Yesterday's buyers at the high may be taking profits.
* Price approaching PDL and bouncing = demand zone. Buyers are defending yesterday's low.

**Range trading:**

* When price trades between PDH and PDL, the market is in a "consolidation" or "inside day" relative to the prior session.
* Breakout from this range often defines the direction for the rest of the session.

### Previous Day Open

The previous day open (PDO) is less commonly watched but valuable:

* It represents the **neutral point** of the prior session — where price started before any directional bias was established.
* Price above PDO and above PDH = strong bullish continuation.
* Price below PDO but above PDL = neutral to mildly bearish.
* Price below PDL = clearly bearish.

### Weekly and Monthly Levels

Higher-timeframe session levels carry more significance because they represent larger pools of accumulated supply and demand:

* **Previous Week High/Low**: Key levels for swing traders. A break above PWH suggests a weekly timeframe breakout. These levels are often tested on Monday or Tuesday of the new week.
* **Previous Month High/Low**: Institutional-grade levels. Many large fund managers track monthly ranges. A monthly level break is a significant event that can trigger multi-day follow-through.

<Tip>
  Previous day high and low are the most important levels for intraday trading. A break of PDH with strong volume often sets the tone for the entire session. Monthly levels carry the most weight for position traders — when price reaches PMH or PML, expect increased institutional activity.
</Tip>

### Level Confluence

Session levels become especially powerful when they **cluster** with other reference points:

| Confluence Type          | Example                                  | Significance                                            |
| ------------------------ | ---------------------------------------- | ------------------------------------------------------- |
| Session + Session        | PDH lines up with PWL from two weeks ago | Double session-level support/resistance                 |
| Session + VWAP           | PDL is near the daily VWAP               | Institutional buying benchmark meets structural support |
| Session + Volume Profile | PDH aligns with a Volume Profile POC     | Price, session structure, and volume all agree          |
| Session + Round number   | PWH is at \$50,000 exactly               | Psychological + structural level                        |
| Session + Fibonacci      | PMH is at the 61.8% retracement          | Technical + structural confluence                       |

When two or more independent levels converge within a tight price range (less than 0.1% apart), that zone becomes a high-probability reaction point.

## Alerts

Session Levels support the following **alert rule**:

| Alert Event     | Description                                                                  |
| --------------- | ---------------------------------------------------------------------------- |
| `level_touched` | Price reaches within a configurable threshold of any displayed session level |

The alert fires for all enabled level types (daily, weekly, monthly). Set appropriate cooldowns to avoid repeated alerts as price oscillates around a level.

## Practical Considerations

* **24/7 markets**: Crypto never closes, so "day" is defined by UTC midnight (or your configured session start). There is no official open/close as in equities. The levels are still valid because the majority of traders and algorithms use UTC midnight as the daily boundary.
* **Session start hour**: If you trade aligned to a specific session (e.g., US equity hours), change `sessionStartHour` to match. For example, setting it to 13 (1 PM UTC = 8 AM EST) gives you levels based on the US trading session.
* **First day of data**: When the chart first loads, the indicator needs at least one completed period to calculate levels. The very first day/week/month on the chart will not have previous session levels.
* **Visual clutter**: Enabling all three periods (day, week, month) plus open levels creates up to 9 horizontal lines. Consider disabling less important levels (e.g., turn off `showOpenLevels` or `showMonthLevels` on intraday timeframes) to reduce visual noise.
* **Line persistence**: Session levels remain visible for the entire current period. They do not fade or remove themselves intra-session.

## Recommended Configurations

### Intraday Scalping (1m–5m)

| Setting           | Value   | Reason                          |
| ----------------- | ------- | ------------------------------- |
| `showDayLevels`   | `true`  | Primary reference               |
| `showWeekLevels`  | `false` | Too far away for scalp targets  |
| `showMonthLevels` | `false` | Too far away for scalp targets  |
| `showOpenLevels`  | `true`  | PDO provides midpoint reference |

### Day Trading (5m–1h)

| Setting           | Value   | Reason                    |
| ----------------- | ------- | ------------------------- |
| `showDayLevels`   | `true`  | Primary S/R levels        |
| `showWeekLevels`  | `true`  | Context for larger moves  |
| `showMonthLevels` | `false` | Rarely reached intraday   |
| `showOpenLevels`  | `true`  | All opens provide context |

### Swing Trading (4h–Daily)

| Setting           | Value   | Reason                           |
| ----------------- | ------- | -------------------------------- |
| `showDayLevels`   | `false` | Too granular for multi-day holds |
| `showWeekLevels`  | `true`  | Primary reference                |
| `showMonthLevels` | `true`  | Major targets and levels         |
| `showOpenLevels`  | `false` | Less relevant at this timeframe  |

## Related Indicators

* [VWAP](/en/indicators/classic/vwap) — Dynamic volume-weighted level that complements static session levels
* [Bollinger Bands](/en/indicators/classic/bollinger-bands) — Dynamic volatility-based levels
* [SMA](/en/indicators/classic/sma) — Dynamic trend-based levels