std_timestd_time is a full calendar for Pine Script v6: the class of time infrastructure other ecosystems get from java.time, C++20 chrono and exchange_calendars, written natively in Pine. Civil dates, durations and periods, time zones with real daylight-saving rules, twelve exchange calendars (NYSE, LSE, CME, JPX, EUREX, HKEX, ASX, TSX, SSE, BSE, SGX, and 24/7 crypto) with holidays, half days and lunch breaks, trading-day arithmetic, sessions with on-the-bar close markers, option expiries including VIX
