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 Hundreds of people showed up to donate blood on Thursday for the victims of the mass shooting at a bar in Thousand Oaks, California.More than 200 people waited to participate in a blood drive at La Reina High School. The line extended out of the school parking lot, stretched down the street and wrapped around the block, school officials said."You know, you hear about all these things happening around the country, but it's different when it's close to home," one woman told Kristine Lazar, a reporter from CNN affiliate KCAL/KCBS. "You want to do everything you can." 599

(CNN) -- For six months now, the days have grown shorter and the nights have grown longer in the Northern Hemisphere -- but that's about to reverse itself.Winter solstice, the shortest day of 2019, will be Saturday, December 21. Or it will be Sunday, December 22. Which day is it for you? It all depends on your time zone.CNN meteorologists Dave Hennen, Judson Jones and Brandon Miller help us understand the science and timing behind the solstice. And then we'll discover some traditions and celebrations around the world that could inspire a travel adventure.The science and timing behind a winter solsticeThe winter solstice marks the shortest day of the year in the Northern Hemisphere, when the sun appears at its most southerly position, directly overhead at the faraway Tropic of Capricorn.It's the reverse in the Southern Hemisphere. There, it marks the longest day of the year -- and the beginning of summer in places such as Argentina, Namibia and New Zealand.When exactly does it occur?The solstice usually takes place on December 21. The time that the solstice occurs and the day itself shifts because the solar year (the time it takes for the sun to reappear in the same spot as seen from Earth) doesn't exactly match up to our calendar year.If you want to be super-precise in your observations, the exact time of the 2019 winter solstice will be 4:19 Universal Time on Sunday. Here are some examples of when that will be for local times around the world:-- Tokyo: 1:19 p.m. Sunday-- Dubai: 8:19 a.m. Sunday-- Rome: 5:19 a.m. Sunday-- Dakar, Senegal: 4:19 a.m. (same as Universal Time)-- Philadelphia: 11:19 p.m. Saturday-- Seattle: 8:19 p.m. Saturday-- Honolulu: 6:15 p.m. SaturdayIf you don't live in one of these time zones above, the website EarthSky has a handy conversion table for your time zone. You might also try the conversion tools at Timezoneconverter.com or WorldTimeServer.com.What causes the winter solstice to even happen?Because the Earth is tilted on its rotational axis, we experience seasons here on Earth. As the Earth moves around the sun, each hemisphere experiences winter when it's tilted away from the sun and summer when it's tilted toward the sun.Wait. Why is the Earth tilted?Scientists are not entirely sure how this occurred, but they think that billions of years ago, as the solar system was taking shape, the Earth was subject to violent collisions that caused the axis to tilt.What other seasonal transitions do we mark?The equinoxes, both spring and fall, occur when the sun's rays are directly over the equator. On those two days, everyone has an equal length of day and night. The summer solstice is when the sun's rays are farthest north over the Tropic of Cancer, giving us our longest day and summer in the Northern Hemisphere.Winter solstice traditions and celebrationsIt's no surprise many cultures and religions celebrate a holiday -- whether it be Christmas, Hanukkah, Kwanzaa or pagan festivals -- that coincides with the return of longer days.Ancient peoples whose survival depended on a precise knowledge of seasonal cycles marked this first day of winter with elaborate ceremonies and celebrations. Spiritually, these celebrations symbolize the opportunity for renewal, a shedding of bad habits and negative feelings and an embracing of hope amid darkness as the days once again begin to grow longer.Many of the ancient symbols and ceremonies of the winter solstice live on today.Here are five extraordinary destinations where you can experience something magical during winter's relentlessly long night:UNITED KINGDOM: Cornwall and StonehengeBetter known for pirates than the solstice, the town of Penzance on the southwest coast of England has revived a delightful array of Cornish solstice events leading up to winter solstice. The Montol Festival is a fun mix of pagan customs and more recent Christmas traditions that were once common throughout Cornwall.Early in the week, join in caroling and other events. On the solstice, referred to here as Montol Eve, get your dancing card ready for the Guise, a community dance in which people dress in masks and other "topsy-turvy" disguises based on a 19th-century tradition of the rich dressing in rags while poorer citizens effected a "mock posh" look.You can also don your finery for torchlit processions. The merrymaking only continues when the revelers disperse to pubs around town.With some planning, it's also possible to incorporate a trip to Stonehenge, the UK's most famous site for solstice celebrations. On the winter solstice, visitors have the rare opportunity to enter the towering, mysterious stone circle for a sunrise ceremony run by local pagan and druid groups.The trip from Penzance to Stonehenge takes less than four hours by car, making it entirely feasible to spend the night in Salisbury, the nearest town to Stonehenge, and rise before dawn for the ceremony among the stones.SWEDEN: Santa Lucia, yule and aurora borealisSweden is rich with solstice traditions. Elements of the yule, Northern Europe's a

(AP) -- Twitter CEO Jack Dorsey says the company was wrong to block weblinks to an unverified political story, a move that had prompted cries of censorship from the right. Dorsey tweeted Friday that “straight blocking of URLs was wrong" and the Twitter has updated its policy and enforcement to fix it.Dorsey was weighing in after an executive at the social media company announced changes to its policy on hacked content. Twitter and Facebook had moved quickly this week to limit the spread of the story published by the conservative-leaning New York Post citing unverified emails from Democratic presidential nominee Joe Biden’s son. 643

Your Lady Bears are National Champions!#SicEm | #TTT | #wFinalFour?????? pic.twitter.com/Fvzf4kyKU6— Baylor Lady Bears (@BaylorWBB) April 8, 2019 157

(AP) — The nation’s top infectious disease expert says that the U.S. may see a “surge upon a surge” of the coronavirus over the coming weeks, and he does not expect current recommendations around social distancing to be relaxed before Christmas. Dr. Anthony Fauci is the director of the National Institute of Allergy and Infectious Diseases. He appeared Sunday on ABC’s “This Week" and NBC's “Meet the Press." He says it's “not too late” for people traveling back home after the Thanksgiving holiday to help stop the spread of the virus by wearing masks, staying distant from other people and avoiding large groups.“So clearly in the next few weeks, we’re going to have the same sort of thing. And perhaps even two or three weeks down the line ... we may see a surge upon a surge," Fauci said Sunday morning. “So we know we can do something about it, particularly now as we get into the colder season and as we approach the Christmas holidays."With this, Fauci said the U.S. will soon see COVID-19 vaccines distributed, starting with those considered priority individuals.“We likely, almost certainly, are going to be vaccinating a portion of the individuals in the first priority before the end of December, and then as we get into January and February and March, more and more,” he said. “So if we can hang together as a country and do these kinds of things to blunt these surges until we get a substantial proportion of the population vaccinated, we can get through this.” 1483