May 2026 |
| When | | Event | Location |
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| May 1 |  | (Men's Swim and Dive) Sierra vs. CCCAA State Championships | Orange Coast College |
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| May 1 |  | (Women's Swim and Dive) Sierra vs. CCCAA State Championships | Orange Coast College |
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| May 1 |  | (Women's Track and Field) Sierra vs. NorCal Trials & Finals | San Joaquin Delta College |
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| May 1, 12am – 11:59pm |  | Summer/Fall 2026 Academic Enrichment Student Registration | Rocklin Campus Nevada County Campus (NCC) Tahoe-Truckee Campus |
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| May 1, 9am – 12pm |  | (Women's Beach Volleyball) Sierra vs. NorCal Pairs Championship | De Anza College |
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| May 1, 10am – 4pm |  | Drop-In Registration Support | Online |
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| May 1, 1 – 4pm |  | (Baseball) Merced vs. Sierra | |
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| May 1, 2 – 5pm |  | (Softball) Santa Rosa vs. Sierra | |
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| May 2 |  | (Baseball) Sierra at Super Regionals | |
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| May 2 |  | (Men's Swim and Dive) Sierra vs. CCCAA State Championships | Orange Coast College |
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| May 2 |  | (Women's Swim and Dive) Sierra vs. CCCAA State Championships | Orange Coast College |
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| May 2 |  | (Women's Track and Field) Sierra vs. NorCal Trials & Finals | San Joaquin Delta College |
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| May 2 |  | (Women's Wrestling) Sierra vs. State Championship | Fresno City College |
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| May 2, 9am – 12pm |  | (Women's Beach Volleyball) Sierra vs. NorCal Pairs Championship | De Anza College |
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| May 2, 12 – 3pm |  | (Softball) Santa Rosa vs. Sierra | |
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| May 2, 2 – 5pm |  | (Softball) Santa Rosa vs. Sierra | |
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| May 3 |  | (Baseball) Sierra at Super Regionals | |
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| May 3 |  | (Men's Golf) Sierra at Bayonet/Monterey | |
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| May 3, 9am – 12pm |  | Dinosaur Day and Science Fest: Morning Session | Rocklin Campus |
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| May 3, 12:30 – 3:30pm |  | Dinosaur Day and Science Fest: Afternoon Session | Rocklin Campus |
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| May 4 |  | (Men's Golf) Sierra at Bayonet/Monterey | |
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| May 4, 12am – 11:59pm |  | 2026 California Primary Ballots Begin Being Mailed Today | |
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| May 4, 12am – 11:59pm |  | Financial Aid Disbursement | Rocklin Campus Nevada County Campus (NCC) Tahoe-Truckee Campus |
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| May 4, 11am – 3pm |  | 28th Annual Juried Student Art Exhibition | Rocklin Campus |
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| May 4, 12 – 2pm |  | May Day Lei Day | Rocklin Campus |
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| May 4, 12 – 2pm |  | Pop to the Polls | Rocklin Campus |
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| May 4, 3 – 5pm |  | Tend the Soil, Touch the Sky: Vietnamese Immigrants in Placer County (Art Reception) | Rocklin Campus |
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| May 5, 12am – 11:59pm |  | 2026 California Primary Ballot Drop-Off Locations Open Today | |
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| May 5, 9:30 – 10:30am |  | Transfer 101 Workshop | Rocklin Campus |
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| May 5, 10am – 2pm |  | Almost Free Food | Rocklin Campus |
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| May 5, 10am – 12pm |  | Getting Started: Drop-in Application and Enrollment Support | Online |
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| May 5, 11am – 1pm |  | College and Career Signing Day | Rocklin Campus |
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| May 5, 3:30 – 5:30pm |  | Empowering Asian Students (EAS) Graduation Celebration | Rocklin Campus |
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| May 5, 5 – 7pm |  | EAS Expo: Night Market on the Quad | Rocklin Campus |
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| May 5, 6 – 7pm |  | Facilities Automation Info Session | Online |
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| May 6, 8am – 8pm |  | Tend the Soil, Touch the Sky: Vietnamese Immigrants in Placer County (May 4 - 29) | Rocklin Campus |
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| May 6, 10am – 2pm |  | Almost Free Food | Rocklin Campus |
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| May 6, 11am – 1pm |  | DIY Stress Relief Plant Pots | Rocklin Campus |
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| May 6, 12 – 1:30pm |  | Handshake Tabling | Rocklin Campus |
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| May 6, 3 – 5pm |  | Summer FAFSA/CADAA Workshops - Every Wednesday | Rocklin Campus |
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| May 6, 4 – 6pm |  | Pride Graduation Celebration | Rocklin Campus |
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| May 6, 7 – 8:30pm |  | OLLI Band Concert at Tahoe-Truckee | Tahoe-Truckee Campus |
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| May 7 |  | (Women's Beach Volleyball) Sierra vs. CCCAA State Team Championship | Long Beach CC |
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| May 7, 12 – 11:59am |  | Help Support Sierra College: Big Day of Giving is May 7 | Online |
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| May 7, 10am – 1pm |  | CSUS Spring Sting | Rocklin Campus |
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| May 7, 10am – 2pm |  | Almost Free Food | Rocklin Campus |
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| May 7, 1 – 3pm |  | Getting Started: Drop-in Application and Enrollment Support | Online |
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| May 7, 4:30 – 7:30pm |  | Grad Fest Cook-Out | Rocklin Campus |
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| May 8 |  | (Women's Beach Volleyball) Sierra vs. CCCAA State Team Championship | Long Beach CC |
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| May 8, 7 – 8:30pm |  | NCC Choral Concert: An Evening of Unity & Peace | Grace Lutheran Church, Grass Valley |
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