April 21

{{#if:21||-

[[{{#ifeq:21|1|{{#switch:{{#ifeq:4|1|12|{{#expr:4-1}}}}

1=January

2=February

3=March

4=April

5=May

6=June

7=July

8=August

9=September

10=October

11=November

12=December

1|12|{{#expr:4-1}}}} }} {{#switch:{{#ifeq:4|1|12|{{#expr:4-1}}}}

1=31

2=29

3=31

4=30

5=31

6=30

7=31

8=31

9=30

10=31

11=30

12=31

1|12|{{#expr:4-1}}}} }}

{{#switch:4

1=January

2=February

3=March

4=April

5=May

6=June

7=July

8=August

9=September

10=October

11=November

12=December

4 }} {{#expr:21-1}}}}|yesterday]]

[[{{#ifeq:21|{{#switch:4

1=31

2=29

3=31

4=30

5=31

6=30

7=31

8=31

9=30

10=31

11=30

12=31

4 }}

12|1|{{#expr:4+1}}}}

1=January

2=February

3=March

4=April

5=May

6=June

7=July

8=August

9=September

10=October

11=November

12=December

12|1|{{#expr:4+1}}}} }} 1|{{#switch:4

1=January

2=February

3=March

4=April

5=May

6=June

7=July

8=August

9=September

10=October

11=November

12=December

4 }} {{#expr:21+1}}}}|tomorrow]]

}

|- |[[{{#switch:{{#if:4| {{#switch:{{#expr: 4 + -1}} |0=12 |13=1 |{{#expr: 4 + -1}} }} |}}{{#if:| {{#switch:{{{daysinmonth}}} |1=31 |2=29 |3=31 |4=30 |5=31 |6=30 |7=31 |8=31 |9=30 |10=31 |11=30 |12=31 | }}|}}{{#if:|{{#ifeq:{{#expr: ({{{isnextmonth}}} + -1) > Template:Cal-date/offset2 }}|1|1|}}|}}{{#if:|{{#ifeq:{{#expr: ({{{isprevmonth}}} + -1) < 1}}|1|1|}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|Template:Cal-date/offset2|{{{getoffsetmonth}}}}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|{{#if:Template:Cal-date/offset2|Template:Cal-date/offset2|1}}|pew{{#expr: {{{getoffsetday}}} + -1}}}}|}} |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |{{#if:4| {{#switch:{{#expr: 4 + -1}} |0=12 |13=1 |{{#expr: 4 + -1}} }} |}}{{#if:| {{#switch:{{{daysinmonth}}} |1=31 |2=29 |3=31 |4=30 |5=31 |6=30 |7=31 |8=31 |9=30 |10=31 |11=30 |12=31 | }}|}}{{#if:|{{#ifeq:{{#expr: ({{{isnextmonth}}} + -1) > Template:Cal-date/offset2 }}|1|1|}}|}}{{#if:|{{#ifeq:{{#expr: ({{{isprevmonth}}} + -1) < 1}}|1|1|}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|Template:Cal-date/offset2|{{{getoffsetmonth}}}}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|{{#if:Template:Cal-date/offset2|Template:Cal-date/offset2|1}}|pew{{#expr: {{{getoffsetday}}} + -1}}}}|}} }}|«]] | colspan="5" align="center"| [[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }}]] |[[{{#switch:{{#if:4| {{#switch:{{#expr: 4 + 1}} |0=12 |13=1 |{{#expr: 4 + 1}} }} |}}{{#if:| {{#switch:{{{daysinmonth}}} |1=31 |2=29 |3=31 |4=30 |5=31 |6=30 |7=31 |8=31 |9=30 |10=31 |11=30 |12=31 | }}|}}{{#if:|{{#ifeq:{{#expr: ({{{isnextmonth}}} + 1) > Template:Cal-date/offset2 }}|1|1|}}|}}{{#if:|{{#ifeq:{{#expr: ({{{isprevmonth}}} + 1) < 1}}|1|1|}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|Template:Cal-date/offset2|{{{getoffsetmonth}}}}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|{{#if:Template:Cal-date/offset2|Template:Cal-date/offset2|1}}|pew{{#expr: {{{getoffsetday}}} + 1}}}}|}} |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |{{#if:4| {{#switch:{{#expr: 4 + 1}} |0=12 |13=1 |{{#expr: 4 + 1}} }} |}}{{#if:| {{#switch:{{{daysinmonth}}} |1=31 |2=29 |3=31 |4=30 |5=31 |6=30 |7=31 |8=31 |9=30 |10=31 |11=30 |12=31 | }}|}}{{#if:|{{#ifeq:{{#expr: ({{{isnextmonth}}} + 1) > Template:Cal-date/offset2 }}|1|1|}}|}}{{#if:|{{#ifeq:{{#expr: ({{{isprevmonth}}} + 1) < 1}}|1|1|}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|Template:Cal-date/offset2|{{{getoffsetmonth}}}}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|{{#if:Template:Cal-date/offset2|Template:Cal-date/offset2|1}}|pew{{#expr: {{{getoffsetday}}} + 1}}}}|}} }}|»]] |- |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 1|1]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 2|2]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 3|3]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 4|4]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 5|5]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 6|6]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 7|7]] |- |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 8|8]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 9|9]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 10|10]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 11|11]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 12|12]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 13|13]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 14|14]] |- |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 15|15]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 16|16]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 17|17]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 18|18]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 19|19]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 20|20]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 21|21]] |- |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 22|22]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 23|23]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 24|24]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 25|25]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 26|26]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 27|27]] |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 28|28]] |- |[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 29|29]] |{{#ifeq:4|2||[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 30|30]]}} |{{#ifeq:{{#if:| {{#switch:{{#expr: {{{monthoffset}}} + 0}} |0=12 |13=1 |{{#expr: {{{monthoffset}}} + 0}} }} |}}{{#if:4| {{#switch:4 |1=31 |2=29 |3=31 |4=30 |5=31 |6=30 |7=31 |8=31 |9=30 |10=31 |11=30 |12=31 | }}|}}{{#if:|{{#ifeq:{{#expr: ({{{isnextmonth}}} + 0) > Template:Cal-date/offset2 }}|1|1|}}|}}{{#if:|{{#ifeq:{{#expr: ({{{isprevmonth}}} + 0) < 1}}|1|1|}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|Template:Cal-date/offset2|{{{getoffsetmonth}}}}}|}}{{#if:|{{#if:Template:Cal-date/offset2Template:Cal-date/offset2|{{#if:Template:Cal-date/offset2|Template:Cal-date/offset2|1}}|pew{{#expr: {{{getoffsetday}}} + 0}}}}|}}|31|[[{{#switch:4 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |4 }} 31|31]]|}} | colspan="4"| |}

{{#if:||}}

• 1956 — Carlo Cosolo (Italian voice of Agent Burke, Chief of Staff and voice director of the live-action film series) is born.
• 1963 — Hasbro CEO Brian Goldner is born.
• 1965 — Robert Tondera (Polish voice of H.B. Luskey, Huxley Prescott, Ratchet, Drag Strip, Dropforge, Saberhorn and Vector Prime) is born.
• 1973 — Katsuyuki Konishi (Japanese voice of Super Link Optimus Prime, Cliffjumper, Angry Archer and Spike Witwicky) is born, declaring who the hell do you think he is.
• 1973 — Actor Mark Dexter (The Prime Minister of the United Kingdom in The Last Knight) is born.
• 1979 — Xóchitl Ugarte (Mexican voice of Carly Spencer) is born.
• 1988 — The Super-God Masterforce OP/ED single "Chōjin Masterforce no Theme"/"Moero! Transformer" is released in Japan by Columbia Music Entertainment.
• 1989 — Nintendo releases the original Game Boy in Japan.
• 1989 — The Transformers episode "The Return of Optimus Prime, Part 2" premiers in Germany.
• 1991 — The Victory episode "The Warrior of the Universe, Star Saber" premieres in Malaysia.
• 1994 — Mathieu Touquet (French voice of Bumblebee in Transformers: EarthSpark - Expedition) is born.
• 1999 — The Beast Wars Neo episode "Lonely Hydra" premieres in Japan.
• 1999 — The Beast Wars Neo ED single "Te no Naka no Uchū" is released in Japan by Columbia Music Entertainment.
• 2003 — The Car Robots episode "Final Battle! Fire Convoy" premieres in South Korea on KBS 2TV.
• 2004 — The Transformers—Collection 2: Series 2.1 is released on DVD in Australia by Madman Entertainment.
• 2004 — The Zone OVA "Enter the New Supreme Commander, Dai Atlas!" is released on DVD in Japan by Columbia Music Entertainment.
• 2005 — The Galaxy Force—Sound Pack 1 soundtrack album is released in Japan by Victor Entertainment.
• 2006 — Galaxy Force—Vol. 11 is released on DVD in Japan by Victor Entertainment.
• 2010 — Last Stand of the Wreckers #4 and Spotlight: Prowl are released by IDW Publishing.
• 2010 — The Transformers Animated OP single "TRANSFORMERS EVO." is released in Japan by Lantis.
• 2012 — The Transformers: Prime episode "Armada" and Transformers: Rescue Bots episode "Walk on the Wild Side" premiere on The Hub.
• 2012 — The Super Robot Lifeform Transformers: Prime episode "Rescue Transformation! Fowler in Crisis" premiers in Japan on TV Aichi.
• 2012 — Transformers Generations 2012 is released in Japan, with a mail-away offer for a Voyager-class Artfire toy and the "A Tale of the Pretenders" comic.
• 2014 — The fifth and final BotCon 2014 box set exclusive Ginrai is revealed.
• 2015 — The fourth BotCon 2015 box set exclusive Megatron is revealed.
• 2018 — TakaraTomy releases Movie Masterpiece MPM-5 Barricade.
• 2018 — Waldyr Sant'Anna (Brazilian voice of Underbite) dies at the age of 81.
• 2023 — Jesús Barreda (Castilian Spanish voice of various characters including Hot Shot in the Armada PS2 game and Bumblebee in the War for Cybertron game) passes away and starts a secret mission.
• 2024 — The Transformers: EarthSpark episode "Mother's Day Present" premieres in Japan.