Academia Hernando Fall 2016 Lecture Series: "History of Byzantium" by Joe Menasce. 10 a.m. to noon. $8 per individual lecture. Pasco-Hernando State College Spring Hill Campus, 450 Beverly Court, Spring Hill. (352) 597-6640.
'Taking the Mystery Out of Landscape Irrigation': The topic will be home irrigation systems — how they work and how to use them in the most cost-efficient and water-efficient manner. Registration required. 10 a.m. to noon. Free. Hernando County Utilities Administration Building, 15365 Cortez Blvd., west of Brooksville. (352) 754-4705.
Ballroom dance: Dance to music by Dave Mussatto. Includes a free dance lesson. Bring a potluck dish to share and your own beverage. Call to RSVP. 5:15 to 9 p.m. $8; $5 for members. Senior Citizens Club, 7925 Rhanbuoy Road, Spring Hill. (352) 597-0107.
Enrichment Centers ballroom dance: Educational ballroom and Latin dancing to music by Short Notice. 6 to 9 p.m. $7. Hernando County Mining Association Enrichment Center, 800 John Gary Grubbs Blvd., Brooksville. (352) 556-3575.
Springstead High School Flea Market: Vendors welcome; spaces are $10. Must provide own table and chair. 8 a.m. to 2 p.m. Springstead Theatre parking lot, 3300 Mariner Blvd., Spring Hill. (352) 683-3528.
Nature Coast Modelers Show: The Nature Coast Modelers invite area modelers to bring their ships, airplanes, cars, trucks and military models made from plastic or wood, completed or under construction. Dioramas welcome. Tables available. Refreshments available. Bring your own chair. 9 a.m. to noon. Free participation; free admission. Dana's Railroad Supply, 4042 Deltona Blvd., Spring Hill. (352) 684-2484.
Responsible Dog Ownership Day: Sponsored by the Hernando County Kennel Club, the event will feature displays and obedience demonstrations. Learn tips to become a more responsible dog owner. 9 a.m. to 3 p.m. A Parade of Champions will begin at 11 a.m. Free. Wagon Wheel Feed, 25410 Cortez Blvd., Brooksville. (352) 279-2334.
Former mermaids perform: A flashback performance by the "Legendary Sirens," featuring retired mermaids from the 1950s to the '70s. Two shows: noon and 2 p.m. $13 for adults, $8 for ages 6 to 12 and free for ages 5 and younger. Weeki Wachee Springs State Park, 6131 Commercial Way, Weeki Wachee. (352) 592-5656. (NOTE: This event continues at the same times on Sunday.)
Vietnam War 50th Anniversary Commemoration: The public is invited to this welcome-home event for Vietnam veterans. Music provided by country artist George Marshall. Food will be available for purchase. 3 p.m. Free. VFW Post 9236, 3435 Shoal Line Blvd., Hernando Beach. (352) 596-9236.
NAMI Hernando Bowling: Bowlers welcome. 2 p.m. Spring Hill Lanes, 3447 Commercial Way, Spring Hill. (352) 610-9544.
Mindfulness Meditation: Take a midday meditation break. Learn how just five minutes a day of meditation can benefit emotional, mental and physical wellbeing. 1:30 to 2:30 p.m. Free. West Hernando/S.T. Foggia Branch Library, 6335 Blackbird Ave., Spring Hill. (352) 754-4043.
Book Discussion Group: . The group is designed for adults. October's book is The Story Hour by Thrity Umrigar. 1:45 to 3:15 p.m. Free. Spring Hill Branch/Harold G. Zopp Memorial Library, 9220 Spring Hill Drive, Spring Hill. (352) 754-4043.
Halloween Storytime: Join the annual Halloween storytime featuring not-so-spooky stories, songs and other activities. Dress in costume if you like. For preschoolers (ages 1 to 4) and elementary students (ages 5 to 12). 5 to 5:30 p.m. Free. West Hernando/S.T. Foggia Branch Library, 6335 Blackbird Ave., Spring Hill. (352) 754-4043.
Socrates Cafe: Monthly opportunity for amiable, open-minded discussion of profound issues. October's discussion: What are the qualities of a good leader? 5 to 7 p.m. Free. Lykes Memorial Library, 238 Howell Ave., Brooksville. (352) 754-4043.