Myanmar Standard Time (MMT; Burmese: မြန်မာ စံတော်ချိန်, [mjəmà sàɰ̃dɔ̀dʑèiɰ̃]), formerly Burma Standard Time (BST), is the standard time in Myanmar, 6:30 hours ahead of UTC (UTC+06:30). MMT is calculated on the basis of 97°30′E longitude. MMT is used all year round, as Myanmar does not observe daylight saving time.