The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory.he Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory.
What does viability mean in Agriculture Dictionary?: the power of a cell, organism, spore, seed or any other living thing to endure and carry on its life processes. Home Tools
Age of Viability. Script: By 21 to 22 weeks after fertilization, the lungs gain some ability to breathe air. This is considered the age of viability because survival outside the womb becomes possible for some fetuses. All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.