September 18
| [[{{#ifeq:18|1|{{#switch:{{#ifeq:9|1|12|{{#expr:9-1}}}} | 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:9-1}}}}
}} {{#switch:{{#ifeq:9|1|12|{{#expr:9-1}}}} |
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:9-1}}}}
}} |
{{#switch:9 | 1=January | 2=February | 3=March | 4=April | 5=May | 6=June | 7=July | 8=August | 9=September | 10=October | 11=November | 12=December | 9
}} {{#expr:18-1}}}}|yesterday]] |
[[{{#ifeq:18|{{#switch:9 | 1=31 | 2=29 | 3=31 | 4=30 | 5=31 | 6=30 | 7=31 | 8=31 | 9=30 | 10=31 | 11=30 | 12=31 | 9
}} |
12|1|{{#expr:9+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:9+1}}}}
}} 1|{{#switch:9 |
1=January | 2=February | 3=March | 4=April | 5=May | 6=June | 7=July | 8=August | 9=September | 10=October | 11=November | 12=December | 9
}} {{#expr:18+1}}}}|tomorrow]] | |||||
}
|- |[[{{#switch:{{#if:9| {{#switch:{{#expr: 9 + -1}} |0=12 |13=1 |{{#expr: 9 + -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:9| {{#switch:{{#expr: 9 + -1}} |0=12 |13=1 |{{#expr: 9 + -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:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }}]] |[[{{#switch:{{#if:9| {{#switch:{{#expr: 9 + 1}} |0=12 |13=1 |{{#expr: 9 + 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:9| {{#switch:{{#expr: 9 + 1}} |0=12 |13=1 |{{#expr: 9 + 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:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 1|1]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 2|2]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 3|3]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 4|4]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 5|5]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 6|6]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 7|7]] |- |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 8|8]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 9|9]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 10|10]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 11|11]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 12|12]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 13|13]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 14|14]] |- |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 15|15]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 16|16]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 17|17]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 18|18]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 19|19]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 20|20]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 21|21]] |- |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 22|22]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 23|23]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 24|24]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 25|25]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 26|26]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 27|27]] |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 28|28]] |- |[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 29|29]] |{{#ifeq:9|2||[[{{#switch:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 30|30]]}} |{{#ifeq:{{#if:| {{#switch:{{#expr: {{{monthoffset}}} + 0}} |0=12 |13=1 |{{#expr: {{{monthoffset}}} + 0}} }} |}}{{#if:9| {{#switch:9 |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:9 |1=January |2=February |3=March |4=April |5=May |6=June |7=July |8=August |9=September |10=October |11=November |12=December |9 }} 31|31]]|}} | colspan="4"| |}
{{#if:||}}
- ???? — Yoshinori Tsushima (Japanese voice of Tank) is born.
- 1931 — Hans Sievers (German voice of Megatron) is born.
- 1933 — Fred Willard (voice of Animated Swindle) is born.
- 1955 — Bob Papenbrook (voice of Mega-Octane and Ruination) is born.
- 1961 — Marvel Comics inker Brian Garvey is born.
- 1965 — Thomas Semeraro (Italian voice of Zeta Prime) is born.
- 1984 — The Transformers episode "More than Meets the Eye, Part 2" premieres in the US.
- 1985 — Writer Mairghread Scott is born.
- 1986 — The Transformers episode "Five Faces of Darkness, Part 4" premieres in the US.
- 1987 — The Headmasters episode "The Shadow Emperor, Scorponok" premieres in Japan.
- 1992 — Voice actress Marissa Lenti is born.
- 1996 — The Beast Wars episode "The Web" premieres in the US.
- 1999 — The Beast Machines episode "The Reformatting" premieres in the US.
- 2001 — The Robots in Disguise episode "Mirage's Betrayal" premieres in the US.
- 2002 — The War Within Preview is released by Dreamwave Productions.
- 2006 — The 25th show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2006 — The Cybertron episode "Ambush" premieres in the US.
- 2010 — Animated Wingblade Optimus Prime, Jetpack Bumblebee, and Cybertron Ratchet are released in Japan.
- 2010 — The Animated episode "Respective Expectations" premieres in Japan.
- 2012 — Prime: Decepticon in Disguise is released by Little, Brown and Company.
- 2012 — The Prime episode "The Return of Megatron: Cybonic Plague" premieres in Indonesia.
- 2013 — Regeneration One #0 and Robots in Disguise Volume 4 TPB are released by IDW Publishing.
- 2013 — The Prime episode "Endgame" premieres in Hungary.
- 2015 — The Robots in Disguise episode "Oh that Windblade" premieres in Poland.
- 2016 — The Rescue Bots episode "The Dome" premieres in Hungary.
- 2016 — The Robots in Disguise episode "Parting of Master and Student" premieres in Japan.
- 2016 — Voice actor C. Martin Croker passes away at age 54.
- 2017 — The Robots in Disguise episode "Unity is Strength" premieres in France.
- 2017 — Toys"R"Us declares bankruptcy.
- 2019 — The Definitive G1 Collection Volume 69: Sins of the Wreckers is released by Hachette Partworks.
- 2019 — Transformers #12 is released by IDW Publishing.
- 2020 — World of Warships: Transformers, a collaboration between Transformers and the online game [[wikipedia:{{#if:|:}}World of Warships|{{#if:||World of Warships}}]], becomes available, allowing players to obtain time-limited skin designs based on Bumblebee, Megatron, Optimus Prime, and Rumble for various warships.
- 2022 — The EarthSpark Optimus Prime sneak peek promo is uploaded.
- 2023 — The Transformers Hall of Fame voting for 2023 ends.
- 2024 — Destro #4 is released by Image Comics and Skybound Entertainment.
- 2024 — One is theatrically released in the Philippines.
- 2024 — The Transformers Classics Vol. 8 is released by Hero-X.