What causes heavy periods. Diagnosing what causes heavy periods can sometimes be difficult. However, some physical condition affecting the uterus, such as fibroids and polyps, may cause heavy menstrual bleeding. The more common reasons for heavy periods are: fibroids. polyps. endometrial hyperplasia. endometrial cancer. adenomyosis.
USA and Canada past and future DST schedules here. Hawaii is in the Hawaii-Aleutian Time Zone in the United States, which is 10 hours behind Greenwich Mean Time ( GMT-10 ). Unlike most states in the US, Daylight Saving Time is not observed in Hawaii , which maintains its 10 hours difference behind GMT throughout the year.
Alaska and Hawaii have their own time zones: Alaska Standard Time (AKST) and Hawaii Standard Time (HST) respectively. Daylight Saving Time began for most of the United States at 2 a.m. on the second Sunday of March. Time reverts to standard time at 2 a.m. on the first Sunday of November. Eastern Standard Time (EST), the time zone New York is in, which is 5 hours behind Greenwich mean Time (GMT). 2  Central Standard Time (CST), the time zone Chicago is in, which is 6 hours behind Greenwich Meantime (GMT). 3  Mountain Standard Time (MST), which is 7 hours behind Greenwich Mean Time (GMT).