How to start a business, seminar sponsored by the Loudoun Small Business Development Center. 11 a.m.-1:30 p.m., Comfort Suites, 80 Prosperity Ave., Leesburg. $15; online registration, $10. 703-430-7222 or www.loudounsbdc.org.
Rotary Club of Ashburn, noon, 1757 Golf Club, 45120 Waxpool Rd., Dulles. 703-969-3070 or www.rotaryclubofashburnva.org.
Pinochle, 12:30 p.m., Leesburg Senior Center, 102 North St. 703-737-8039.
Poker, age 55 and older. 1:30-4 p.m. Tuesdays and Thursdays, Senior Center at Cascades, 21060 Whitfield Pl., Potomac Falls. $1; center members, free. 703-430-2397.
“Monarch Butterflies, Featherweight Fliers,” a garden lecture by photojournalist Marie Majarov, sponsored by the Loudoun County Master Gardeners. 7 p.m., Rust Library, 380 Old Waterford Rd., Leesburg. Free. 703-777-0323.
Sterling Ruritan Club bingo, benefits local charities. 7 p.m.,183 Ruritan Rd., Sterling. 703-444-6039.
Countryside Women’s Club, meeting and social, with a guest speaker. 9:30 a.m., Parkway Meeting Room, 46020 Algonkian Parkway, Potomac Falls. Free. 703-403-6505 or email@example.com.
Knitting and crocheting, 10 a.m.-noon , Senior Center at Cascades, 21060 Whitfield Pl., Potomac Falls. Free. 703-430-2397.
After-hours teen center, for ages 12-18. Teens must have a permission slip on file signed by a parent or guardian. 7-10 p.m., Cascades Library, 21030 Whitfield Pl., Potomac Falls. Free. 703-444-3228.
“The Mikado,” Gilbert and Sullivan’s comic opera, presented by the Loudoun Lyric Opera. 8 p.m. Fridays and Saturdays; 3 p.m. Sundays, through Feb. 17. Franklin Park Performing and Visual Arts Center, 36441 Blueridge View Lane, Purcellville. $22; seniors, $17; students, $12. 540-338-7973.
Birding at Banshee, monthly bird walk, sponsored by Loudoun Wildlife Conservancy and the Friends of Banshee Reeks. Take binoculars. 8 a.m., Banshee Reeks Nature Preserve, 21085 The Woods Road, Leesburg. Free. 540-554-2542 or firstname.lastname@example.org.
Leesburg winter market, sponsored by the Loudoun Valley HomeGrown Markets Association. 9 a.m.-noon, Catoctin Circle (Virginia Village Shopping Center). www.loudounfarmersmarkets.org or 540-454-8089.
“Lanesville Ordinary” living-history, for all ages, heritage activities such as baking bread, making clothes, open-fire cooking and woodworking. 10 a.m.-2 p.m., Claude Moore Park/Lanesville Heritage Area, 21544 Old Vestal's Gap Rd., Sterling. Free. 571-258-3700.
Loudoun Health and Fitness Fair, with products and services focused on active families. Benefits the Loudoun Free Clinic. 10 a.m.-3 p.m., Ida Lee Park Recreation Center, 50 Ida Lee Dr. NW, Leesburg. Admission, free. 703-777-1368.
Purcellville community market, 10 a.m.- 1 p.m., It’s Bazaar, 143 N. 21st St., Purcellville. 703-967-0431 or www.loudounfarms.org.
Super Science Saturdays, “Scientists and Inventors” is the theme for demonstrations and hands-on activities at the National Air and Space Museum. 10 a.m.-3 p.m., Udvar-Hazy Center, 14390 Air and Space Museum Pkwy., Chantilly. $15 per vehicle. 202-633-1000 or www.nasm.si.edu.
“Winter Talks at Oatlands,” a presentation by Kevin Grigsby on his book, “From Loudoun to Glory: The Role of African Americans from Loudoun County in the Civil War.” Ancestors of the author were among the enslaved at Oatlands. 2 p.m., Oatlands Plantation Carriage House, 20850 Oatlands Plantation Lane, Leesburg. Free. 703-777-3174 or www.oatlands.org.
Lucketts Bluegrass, music by Tony Holt and the Wildwood Valley Boys. Food sold. 7 p.m. Lucketts Community Center, 42361 Lucketts Rd., Leesburg. $15. 703-771-5281 or www.luckettsbluegrass.org.
Celtic jam session, refreshments sold by Hill High Orchard. 1-4 p.m., Round Hill Arts Center, 35246 Harry F. Byrd Hwy., Round Hill. $5, suggested donation. 540-338-5022 or www.roundhillartscenter.org.
“A Musical Odyssey from Appalachia to Himalaya,” a screening of the documentary film by Tara Linhardt, one of the creators of the Mountain Music Project. 2 p.m., Thomas Balch Library, 208 W. Market St., Leesburg. Free. 703-737-7195.
Fox-hunting roundtable, a panel discussion on the history and future of the sport in the Piedmont, sponsored by the Mosby Heritage Area Association. 3-5 p.m., National Sporting Library and Fine Art Museum, 102 The Plains Rd., Middleburg. $30; members, $25. www.mosbyheritagearea.org, info@
mosbyheritagearea.org or 540-687-6681.
“Brass Extravaganza,” concert by an ensemble of professional, amateur, military and civilian players,directed by Andrew Bluhm. A benefit for the Holy Trinity Lutheran Church pipe organ fund and community music program. 4 p.m., Holy Trinity Lutheran Church, 605 W. Market St., Leesburg. Donations welcome. 703-777-4912.
Toastmasters Club, NOVA Dawn Breakers. 7:30-8:30 a.m., Eggspectation restaurant, 1609 Village Market Blvd., Leesburg. 703-717-1667 or email@example.com.
Sewing and “stitch-in,” for beginners. Take sewing, knitting, needlepoint or crochet projects. Machines provided. 9-11:45 a.m., Leesburg Senior Center, 102 North St. Free. 703-737-8039.
Tai chi for adults, slow-movement exercises that aim to blend mind, spirit and body. 10-11 a.m. Mondays through March 4. Middleburg Community Center, 300 W. Washington St. 540-687-6375.
Mah-jongg, Chinese tile game. Mondays and Thursdays at noon, Leesburg Senior Center, 102 North St. 703-737-8039.
Sterling Rotary Club meeting, 12:30 p.m. Mondays, Logan’s Roadhouse, 46321 McClellan Way, Sterling. 703-401-4509.
Line dance, for age 55 and older, led by Carolyn Bledsoe. 2-3 p.m., Carver Center, 200 Willie Palmer Way, Purcellville. Nonmembers, $2. 571-258-3400.
Rotary Club of Leesburg Daybreak, 7:30 a.m., Tuscarora Mill restaurant, 203 Harrison St. SE, Leesburg. 703-622-4320 or www.leesburgdaybreak.org.
Party bridge, 1-4 p.m., Leesburg Senior Center, 102 North St. Free. 703-737-8039.
Potluck dinner and white elephant bingo, take a covered dish that six to eight people can share and a white elephant gift, wrapped or in a gift bag. 5:30-7:30 p.m., Leesburg Senior Center, 102 North St. Free. 703-737-8039.
Bluegrass and folk jam, open to musicians of all skill levels. 7-8:30 p.m., Morningside House,
316 Harrison St. SE, Leesburg. Free. 571-237-2888.
Leesburg Senior Center bingo, advanced game, 9 a.m. Wednesdays; slower bingo, 12:30 p.m. Fridays, Leesburg Senior Center, 102 North St. 703-737-8039.
Book discussion, call for titles. 10 a.m., Leesburg Senior Center, 102 North St. 703-737-8039.
Waterford Quilters, new members are welcome. 10 a.m., St. Peter’s Episcopal Church, 37018 Glendale St., Purcellville. Free. 703-777-9229.
Middleburg duplicate bridge, open game. 12:30 p.m., Middleburg United Methodist Church, 15 W. Washington St. $5. 540-687-5093.
Preschool playtime drop-in, play equipment provided; parental supervision required. 3:30-4:30 p.m., Douglass Community Center, 407 E. Market St., Leesburg. $1. 703-771-5913.
Ashburn Toastmasters, for those interested in developing leadership skills. 7:15 p.m., Broadlands Community Center, 43008 Waxpool Rd., Ashburn. 703-795-9324 or http://ashburn.freetoasthost.ws.
Valentine’s Ball, dancing, food and drink that re-create the social atmosphere of the 1920s. Black-tie attire is encouraged. 7-10 p.m., Morven Park Estate, 17263 Southern Planter Lane, Leesburg. $60. 703-777-2414 or www.morvenpark.org.
Mail: Community Events, Loudoun Living, The Washington Post, 104 Dry Mill Rd., Suite 101, Leesburg, Va. 20175
Details: Announcements are accepted on a space-available basis from nonprofit and public organizations and must be received at least 14 days before the publication date. Include event name, dates, times, exact address, prices and a publishable contact phone number.