A Canterlot Wedding - Part 2, the twenty sixth episode of Season Two was originally aired on April 21, 2012.

In this episode, Shining Armor and Princess Cadance are set to be married, but Queen Chrysalis has a devious plan to ruin Shining Armor's happily ever after and the future of Equestria.

A Canterlot Wedding - Part 1, the twenty fifth episode of Season Two was originally aired on April 21, 2012.

In this episode, Twilight Sparkle grapples with her conflicted feelings when she finds out her brother, Shining Armor, is marrying Princess Celestia's niece, Princess Cadance. Twilight also begins to suspect that Cadance has changed since their childhood.

It also features the song, B.B.B.F.F..

A-Dressing Memories, the first episode of Friendship is Forever mini-series was originally aired on April 20, 2020.

In this episode, Rarity reminisces about her past moments of generosity while making the dress for Twilight Sparkle's princess coronation.

Sparkle’s Seven, the fourth episode of Season Nine was originally aired on April 20, 2019.

In this episode, Twilight Sparkle and Shining Armor pit their wits against each other to settle a long-standing sibling rivalry, but they soon discover they are not the only competitors.

Trade Ya!, the twenty second episode of Season Four was originally aired on April 19, 2014.

In this episode, friendships are tested when a trip to the Rainbow Falls Traders Exchange goes wrong.

Trivia

Bloom & Gloom, the fourth episode of Season Six was originally aired on April 18, 2015.

In this episode, Apple Bloom's anxiety over not having her cutie mark turns her life into a nightmare.

Trivia

Gauntlet of Fire, the fifth episode of Season Six was originally aired on April 16, 2016.

In this episode, Spike takes part in a perilous Gauntlet for the title of Dragon Lord in order to protect his friends.

Trivia

All Bottled Up, the second episode of Season Seven was originally aired on April 15, 2017.

In this episode, Starlight Glimmer and Trixie accidentally make the Cutie Map disappear while the Mane Six are on a friendship retreat, so Starlight uses a spell to bottle up her anger until the map is retrieved.

It also features the song, Best Friends Until the End of Time, which is the first song of season seven.

Celestial Advice, the first episode of Season Seven was originally aired on April 15, 2017.

In this episode, Twilight Sparkle agonizes over Starlight Glimmer's future and seeks advice from Princess Celestia.

Trivia