## [0.9.5] - 2026-03-12 - Time & Timezone Fixes

[alaa-eddine]

Added

• PineTS.setTimezone(timezone): Display-only chart timezone (like TradingView's timezone picker). Accepts IANA names, UTC±N offsets, or 'UTC'. Only affects log.* timestamp formatting — computation functions (timestamp(), hour, dayofmonth, time_tradingday, etc.) always use the exchange timezone from syminfo.timezone.

Fixed

• closeTime Normalization: BinanceProvider and MockProvider now normalize closeTime to the TradingView convention (closeTime = nextBar.openTime) instead of Binance's raw nextBarOpen - 1ms. IProvider docs updated to specify this convention. For array-based data missing closeTime, PineTS now estimates it as openTime + timeframe duration (falls back to 1D when unknown).
• time_tradingday Uses Close Date: Was returning midnight UTC of the bar's open date. Now correctly returns midnight UTC of the close date (matching TradingView). E.g. a weekly bar opening 2019-01-07 → closes 2019-01-14 → time_tradingday = 2019-01-14 00:00 UTC.
• timestamp(dateString) Exchange Timezone: Date strings like "2019-06-10 00:00" were parsed in the host system's local timezone. Now explicitly resolved in the exchange timezone (syminfo.timezone), matching TradingView behaviour. Strings with explicit offsets or Z are honoured as-is.
• TimeHelper as Series (#156): Series.from() now unwraps NAMESPACES_LIKE dual-use objects (time, time_close, etc.) by detecting the .__value Series property, instead of wrapping the object itself. Added a null-guard to prevent a crash when the source is null. (contribution by @dcaoyuan)
• Log Timestamps Use Chart Timezone: log.info/warning/error hardcoded UTC for bar timestamp prefixes. They now respect the timezone set via setTimezone(), falling back to the exchange timezone.
• Etc/UTC Alias: Added 'Etc/UTC' to the fast-path UTC check in getDatePartsInTimezone(), fixing date-part calculations for providers that use the canonical Etc/UTC identifier (common for crypto).
• ta.vwap Session Timezone: VWAP day-boundary detection now uses getDatePartsInTimezone(openTime, syminfo.timezone) instead of toISOString().slice(0, 10), so session resets are correct for non-UTC exchanges.