During the extended peak of the strip, the workload grew to include advertising, merchandising, promotional work, public service comics and other specialty work — in addition to the regular six dailies and one Sunday strip per week.

During the 17th century, English emigration to the British colonies in North America was at its peak, and the new settlers took the English language with them.

During the 1990s, the first peak was measured with increasing sensitivity and by 2000 the BOOMERanG experiment reported that the highest power fluctuations occur at scales of approximately one degree.

During the peak of the age of sail, beginning in the early 17th century, it has been customary ( and later a legal requirement ) for ships to carry flags designating their nationality ; these flags eventually evolved into the national flags and maritime flags of today.

During the show's peak in popularity, Hee Haw often competed in syndication against The Lawrence Welk Show, a long-running ABC program which had also been canceled in 1971, also in an attempt to purge the networks of older demographic-leaning programs.

John Major wrote in his auto-biography that, " During my premiership interest rates fell from 14 % to 6 %; unemployment was at 1. 75 million when I took office, and at 1. 6 million and falling upon my departure ; and the government's annual borrowing rose from £ 0. 5 billion to nearly £ 46 billion at its peak before falling to £ 1 billion ".

During his reign Lithuania reached the peak of its territorial expansion, centralization of the state had begun, and the Lithuanian nobility became increasingly prominent in state politics.

During the 9th century peak of the Viking expansion, large fleets set out to attack the degrading Frankish empire by attacking up navigable rivers such as the Seine.

During peak hours, traffic is allowed to use the shoulder as an additional lane.

During the 16th century the Songhai Empire reached its peak, stretching from the Senegal and Gambia rivers and incorporating part of Hausaland in the east.

During this period, the portrayal of opium in literature became squalid and violent, British opium trade was largely supplanted by domestic Chinese production, purified morphine and heroin became widely available for injection, and patent medicines containing opiates reached a peak of popularity.

During the peak of the battle, ARVN had access to only one 105 mm howitzer to provide close support while the enemy attack was backed by an entire artillery division.

During the early 2000s, the mean year-on-year demographic growth set a new record with its 2003 peak variation of 2. 1 %, doubling the previous record reached back in the 1960s when a mean year-on-year growth of 1 % was experienced.

During the time of her presidency she has been extremely popular among Finns: her approval ratings rose and reached a peak of 88 % in December 2003.

During its second Golden Age, the Sassanid Empire reached the peak of its power under Khosrau I in the 6th century.

* November 15 – Pike expedition: During his second exploratory expedition, Lieutenant Zebulon Pike sees a distant mountain peak while near the Colorado foothills of the Rocky Mountains ( later named Pikes Peak in his honor ).

During the famous Congress of Gniezno he officially freed himself of tribute to the Holy Roman Empire and finally, at the peak of his reign, he had himself crowned as King, the first Polish ruler to do so.

During the height of the day, photosynthesis is at its peak, producing the highest levels of sugar in sap, making this the least ideal time of day to harvest.

During the reigns of Emperor Huan and Emperor Ling, leading officials ' dissatisfaction with the eunuchs ' usurpations of power reached a peak, and many began to openly protest against them.

During the peak of its popularity in the late 1980s through early 1990s, the franchise gained considerable worldwide success and fame.

During peak immigration periods several ferries on any given river often competed for pioneer dollars.

During this peak they may sing for four hours of the day, almost half the hours of daylight.

During the late 1980s and early 1990s, Oakland's black plurality reached its peak at approximately 47 % of the overall population.

During peak electrical demand, the same Lewiston pumps are reversed and actually become generators, similar to those at the Moses plant.

During his peak years, Snead was an exceptionally long driver, particularly into the wind, with very good accuracy as well.

During the breeding season, unpaired male aardwolves will search their own territory, as well as others ', for a female to mate with.

During the breeding season, the male call of this marsh-dwelling bird is a " low pitched boom "; hence, it is occasionally called the " bunyip bird ".

During the breeding season, it is common for females to have several mates.

During breeding season, the male will attempt to attract females by calling.

During breeding season the flocks break up.

During the breeding season, sea lions gather on both sandy and rocky shores.

During the breeding season, an adult male is accepted into the band of females and juveniles near the beginning of the breeding season, leading to a polygynous mating system.

During the breeding program, crosses were also made with the Russian Blue and the Burmese.

During the breeding season, one can easily distinguish the sexes-the male is far darker than the female, with a tall wavy and transparent crest along the spine and tail, with dark spots covering the rest of the body, including the stomach area, which is a far more vivid pink or orange than it is in winter and autumn.

During the breeding season, male smooth newts develop a continuous wavy ( rather than jagged ) crest that runs from their head to their tail, and their spotted markings become more apparent.

During the breeding season they are active during the day as well as night, but outside this period activity is restricted to rainy or humid nights.

* During the 17th century and 18th century, whaling, fishing and oyster breeding increased the wealth of the population

During the transition to the Neolithic age, agriculture and cattle breeding became the core activities of a growing number of human communities.

During the breeding season, females will move into smaller areas with their young, which they will defend fiercely, especially from any males.

During all this time, the economy of the city depended on the breeding of sheep for the cloth industry, complemented by the cultivation of flax for the manufacture and trade of linen.

During the 1980s, iguanas from North Seymour were brought to the Charles Darwin Research Station as part of a breeding and repopulation project, and in the 1990s, land iguanas were reintroduced to Baltra.

During World War II, the breed became nearly extinct until efforts by the Norwegian Forest Cat Club helped the breed by creating an official breeding program.

During breeding season, males and females display a variety of behaviors to attract mates, including head flagging — swiveling their heads from side-to-side in tandem — and wing salutes, where the wings are repeatedly opened and closed.

During the breeding season, it acquires the distinctive reddish throat patch which is the basis for its common name.

During the beginning of the breeding season, courting pairs soar high together and one or both may make steep spiralling or swooping dives.

During the breeding season, birds remain above the tree line, although they may use food provided by tourists at refuges and picnic areas.

During the breeding season they are territorial and usually remain on their territory all the time.

During the breeding season, it acquires the distinctive red neck plumage, black cap and contrasting pale grey face from which its name was derived.