The Centennial Bulb in Livermore celebrated its 125th birthday on June 6, 2026, with a community event at Fire Station #6. - The bulb has been burning continuously since the late 1890s, with only a few brief interruptions.
- It holds a Guinness World Record as the longest-burning light bulb. - Retired Deputy Fire Chief Tom Bramell has been its steward for 23 years.
- The city has installed a backup power supply to ensure it remains lit. The event was part of Livermore's 150th anniversary celebrations, drawing hundreds of attendees and global attention.