I'm trying to get yesterday close price with dayClose(UTC,1), the output is the value of the Open price for yesterday's bar at UTC 19:55:00.000 if EndMarket = 2000.

If I add 1 minute to EndMarket, EndMarket = 2001, the dayClose(UTC,1) will get the correct yesterday's close tick at UTC 19:59:59.999

BarPeriod = 5 btw, so is this normal? Thanks