# −77.82X−78.29

−77.82X−78.29 (pronounced "negative seventy-seven point eight two by negative seventy-eight point two nine") is the second extended play and fourth release by South Korean girl group Everglow. It was released on September 21, 2020, by Yuehua Entertainment. It is available in two versions, −77.82X and −78.29, and contains four tracks, with "La Di Da" released as the lead single.

## Title

The album is titled −77.82X−78.29 after the coordinates of Antarctica, which is featured on the album cover. During the showcase for the album, member E:U was asked about it; she explained, "All the albums we have released so far convey the 'Everglow universe'. It'll be quite fun putting together these clues about our story. I can't tell you everything yet, but the upcoming stories are equally enjoyable [...]".

## Background

On September 7, 2020, Yuehua Entertainment revealed that Everglow would release their second mini-album titled −77.82X−78.29 on September 21.
Concept images came out between September 8–10. The tracklist was released on September 11, revealing four tracks: lead single "La Di Da", "Untouchable", "Gxxd Boy" and "No Good Reason"; the lyrics for "La Di Da" were co-written by member E:U.
The music video teaser for "La Di Da" was released on September 16, and the music video on September 21.

## Composition

According to Yuehua Entertainment, −77.82X−78.29 represents Everglow's "powerful and intense charisma", as compared to their previous works. The album is characterized by its bolder sound.
The lead single, "La Di Da", falls in the uptempo electropop and retro categories, and its lyrical content is a "warning" to the "haters who are pretending and full of dissatisfaction in [this] confusing era".

## Promotion

Everglow held a live showcase on September 21, where they performed "La Di Da" and "Untouchable".
The group started promoting "La Di Da" on September 24 at Mnet's M Countdown, followed by performances on KBS' Music Bank, MBC's Show! Music Core and SBS' Inkigayo.
They broke their first week's sales, with their album selling more than 25,000 copies.

## Credits and personnel

Adapted from the album liner notes.

## Charts

Chart performance for −77.82X−78.29 :
| Chart (2020) | Peak position |
| South Korean Albums (Gaon) | 4 |

## Accolades

Year-end lists :
| Critic/Publication | List | Work | Rank |
| Billboard | The 20 Best K-Pop Songs of 2020: Critics' Picks | "La Di Da" | 1 |
| Dazed | The 40 Best K-pop Songs of 2020 | "La Di Da" | 4 |
| South China Morning Post | The Top 15 K-pop Albums of 2020 | −77.82X−78.29 | N/A |
| Time | The Songs and Albums That Defined K-Pop's Monumental Year in 2020 | "La Di Da" | N/A |
| Paper | The 40 Best K-pop Songs of 2020 | "La Di Da" | 16 |
| MTV | The Best Kpop B-sides of 2020 | "No Good Reason" | 16 |
| BuzzFeed | The Best Kpop Songs of 2020 | "La Di Da" | 10 |

## Release history

Release formats for −77.82X−78.29 :
| Region | Date | Format | Distributor |
| Various | September 21, 2020 | Digital downloadstreaming | YuehuaStone Music |
| South Korea | September 21, 2020 | Digital downloadstreaming | YuehuaStone Music |
| South Korea | September 21, 2020 | CD | YuehuaStone Music |