Observe the biggest and brightest “supermoon” in 68 years at Bishop Museum’s J. Watumull Planetarium the night of Nov. 13. That’s when the orb will make its closest approach to Earth in full-moon mode a mere 221,524 miles away — 30,000 miles nearer than its most distant point in orbit around the planet.

A supermoon of this caliber last occurred in 1948 and will not occur again until the year 2034, according to the museum’s expert stargazers.

To mark the lunar phenomenon, the planetarium is hosting special programs Nov. 13:

>> “The Moon Show” at 6 p.m., a live presentation exploring the lunar phases and what constitutes a supermoon.

>> Supermoon viewing through the museum’s telescopes from 7 to 8 p.m.

>> “Pink Floyd: Dark Side of the Moon” at 8 p.m., the entire classic album set to lasers.

Cost: $10 general, $7 for children ages 4-12, $5 for members (discount for both shows, $17, $12 and $7, respectively). Visitors must purchase a ticket from either show to attend telescope viewing. Reservations: bishopmuseum.org/planetarium.