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A 2021 publication [8] about solar geometry first calculates the x-, y-, and z-component of the solar vector, which is a unit vector with its tail fixed at the observer's location and its head kept pointing toward the Sun, and then uses the components to calculate the solar zenith angle and solar azimuth angle. The calculated solar vector at 1 ...
For example, with an axial tilt is 23°, and at a latitude of 45°, then the summer's peak sun angle is 68° (giving sin(68°) = 93% insolation at the surface), while winter's least sun angle is 22° (giving sin(22°) = 37% insolation at the surface). Thus, the greater the axial tilt, the stronger the seasons' variations at a given latitude.
Walnut Creek Y Yellow Line — Walnut Creek: May 21, 1973: 2,850: 2,089: Warm Springs/ South Fremont G Green Line O Orange Line — Fremont: March 25, 2017: 1,234: 2,082: West Dublin/ Pleasanton B Blue Line — Dublin/ Pleasanton: February 19, 2011: 1,278: 1,190: West Oakland B Blue Line G Green Line R Red Line Y Yellow Line — Oakland ...
The San Francisco Bay Area Rapid Transit District (occasionally abbreviated in early years to BARTD) was created in 1957 [3] to provide a transit alternative between suburbs in the East Bay and job centers in San Francisco's Financial District as well as (to a lesser extent) those in Downtown Oakland and Downtown Berkeley.
Walnut Creek station opened on May 21, 1973 as part of an extension from MacArthur to Concord. [6] The city of Walnut Creek began operating a shuttle service between the station and the downtown area on December 12, 1974. [7] It was taken over by the Central Contra Costa Transit Authority (County Connection) on July 1, 1980. [8] [9] BART ...
Walnut Creek is a city in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area, about 16 miles (26 kilometers) east of the city of Oakland. Walnut Creek has a total population of 70,127 per the 2020 census , is located at the junction of the highways from Sacramento and San Jose ( I-680 ...
The bus station is served by SolTrans Blue Line between the Walnut Creek BART station, Benicia Industrial Park, Fairfield Transportation Center, Vacaville Transportation Center, Dixon and the Davis Mondavi Center Monday through Saturday. Yolobus route 138 at the Mondavi Center connects to the UC Davis Medical Center in Davis.
The BART tracks run roughly north–south in a trench below street level, with two 700-foot (210 m)-long side platforms. The station building is approximately 430 by 160 feet (131 m × 49 m), with an undulating roofline and three large circular skylights .