May 31
| [[{{#ifeq:31|1|{{#switch:{{#ifeq:5|1|12|{{#expr:5-1}}}} | 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:5-1}}}}
}} {{#switch:{{#ifeq:5|1|12|{{#expr:5-1}}}} |
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:5-1}}}}
}} |
{{#switch:5 | 1=January | 2=February | 3=March | 4=April | 5=May | 6=June | 7=July | 8=August | 9=September | 10=October | 11=November | 12=December | 5
}} {{#expr:31-1}}}}|yesterday]] |
[[{{#ifeq:31|{{#switch:5 | 1=31 | 2=29 | 3=31 | 4=30 | 5=31 | 6=30 | 7=31 | 8=31 | 9=30 | 10=31 | 11=30 | 12=31 | 5
}} |
12|1|{{#expr:5+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:5+1}}}}
}} 1|{{#switch:5 |
1=January | 2=February | 3=March | 4=April | 5=May | 6=June | 7=July | 8=August | 9=September | 10=October | 11=November | 12=December | 5
}} {{#expr:31+1}}}}|tomorrow]] | |||||
}
|- |[[{{#switch:{{#if:5| {{#switch:{{#expr: 5 + -1}} |0=12 |13=1 |{{#expr: 5 + -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:5| {{#switch:{{#expr: 5 + -1}} |0=12 |13=1 |{{#expr: 5 + -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:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }}]] |[[{{#switch:{{#if:5| {{#switch:{{#expr: 5 + 1}} |0=12 |13=1 |{{#expr: 5 + 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:5| {{#switch:{{#expr: 5 + 1}} |0=12 |13=1 |{{#expr: 5 + 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:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 1|1]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 2|2]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 3|3]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 4|4]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 5|5]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 6|6]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 7|7]] |- |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 8|8]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 9|9]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 10|10]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 11|11]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 12|12]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 13|13]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 14|14]] |- |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 15|15]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 16|16]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 17|17]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 18|18]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 19|19]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 20|20]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 21|21]] |- |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 22|22]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 23|23]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 24|24]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 25|25]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 26|26]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 27|27]] |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 28|28]] |- |[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 29|29]] |{{#ifeq:5|2||[[{{#switch:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 30|30]]}} |{{#ifeq:{{#if:| {{#switch:{{#expr: {{{monthoffset}}} + 0}} |0=12 |13=1 |{{#expr: {{{monthoffset}}} + 0}} }} |}}{{#if:5| {{#switch:5 |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:5 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |5 }} 31|31]]|}} | colspan="4"| |}
{{#if:||}}
- 1954 — Bernard Métraux (French voice of Beast Wars Cheetor and Dark of the Moon Soundwave) is born.
- 1958 — Director of photography Mitchell Amundsen is born.
- 1962 — Gustavo López (Mexican voice of Lockdown) is born.
- 1964 — Pascal Sellem (French voice of Cosmos in EarthSpark) is born.
- 1970 — Cláudio Galvan (Brazilian voice of Wheeljack and Mudflap) is born.
- 1971 — Bill Millsap (voice of the Narrator in Transformers: Galactic Trials) is born.
- 1980 — Giuliana Atepi (Italian voice of Cruelty) is born.
- 1982 — Writer Ian Flynn is born.
- 1986 — Hiroko Ushida (Japanese voice of Alice) is born.
- 1988 — The Super-God Masterforce episode "Super Warriors - The Godmaster Brothers" premieres in Japan.
- 1990 — Víctor Díaz (Latin-American Spanish voice of Carlos Lopez) is born.
- 1998 — Beast Wars: Transformers for the PC is released.
- 2000 — The Car Robots episode "Counter Arrow's Betrayal?!" premieres in Japan.
- 2006 — G.I. Joe vs. the Transformers: The Art of War #3 is released by Devil's Due Press. Infiltration #5 is released by IDW Publishing.
- 2007 — Transformers: The Ark is released by IDW Publishing. Transformers Mix & Match and Transformers Prime Time are released by Reader's Digest. Transformers: Identification and Price Guide is released by Krause Publications. Transformers: The Movie Storybook, Meet the Autobots, Meet the Decepticons and Transformers: The Junior Novel are released by HarperCollins Publishers. The Transformers novelization is released by Del Rey Books. Whew!
- 2008 — The Transformers Animated episode "SUV: Society of Ultimate Villainy" premieres in Canada.
- 2008 — The Transformers Animated episode "A Fistful of Energon" premieres in the United States.
- 2008 — The Transformers Animated episode "Total Meltdown" premieres in Germany.
- 2008 — Heitor Fragas (Brazilian voice of Robby Malto) is born.
- 2009 — The fourth and final day of BotCon 2009.
- 2013 — The Transformers: Prime episode "Plus One" premieres on The Hub.
- 2013 — Transformers Prime — Vol. 20 and Transformers Prime — Vol. 21 are released to home media in Japan by Avex Trax.
- 2014 — The Rescue Bots episode "Buddy System" premieres on Hub Network.
- 2015 — The Robots in Disguise episode "Adventures in Bumblebee-Sitting!" premieres in Japan.
- 2016 — The Rescue Bots episode "Enemy of My Enemy" premieres on Pop in the UK.
- 2016 — The second teaser trailer for Transformers: The Last Knight is released.
- 2017 — Till All Are One #10 and Micronauts: Wrath of Karza #2 are released by IDW Publishing.
- 2017 — Transformers: The Definitive G1 Collection: Volume 50: Heart of Darkness is released by Hachette Partworks.
- 2019 — TakaraTomy releases Siege SG-20 Pteraxadon, SG-21 Red Heat and Stakeout, SG-22 Chromia, SG-23 Prowl, and SG-24 Soundwave.
- 2019 — The Transformers Classics Vol.4 is published by Hero-X.
- 2019 — Xebec becomes defunct.
- 2020 — The Cyberverse episodes "Rack 'n' Ruin 'n' Ratchet" and "Dweller In The Depths" premieres in the U.S.
- 2021 — Villagebooks to release volume 4 of The Transformers: More than Meets the Eye.
- 2022 — It's a Transformers Tuesday and Hasbro Pulse officially reveals and puts up pre-orders for Shattered Glass Collection Blaster & Rewind.
- 2023 — Hasbro Pulse reveals and puts preorders up for TakaraTomy's Rise of the Beasts Optimus Primal.
- 2023 — Transformers Go! Go! #34 is published.
- 2024 — TakaraTomy officially reveals the 5th and final deluxe wave of Earthspark.
- 2024 — The EarthSpark episode "The Last Hope, Part 2" premieres on YTV in Canada.
- 2025 — TakaraTomy releases the Studio Series SS-143 Double Punch, SS-144 Decepticon Hatchet, SS-145 Galvatron, SS-146 Apelinq, SS GE-10 Skywarp, Synergenex Transformers × Godzilla Optimus Prime Type MFS-3 Kiryu and Megatron Type Godzilla.
- 2025 — The EarthSpark episode "Togetherness" premieres in Cantonese.
- 2026 — Final day of the Transformers Meet Japan pop up event at the Miraiya Books Tsudanuma Store in Miyagi, Japan.