September 30
| [[{{#ifeq:30|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:30-1}}}}|yesterday]] |
[[{{#ifeq:30|{{#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:30+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:||}}
- 1939 — Len Cariou (Uncle Hank in Bumblebee) is born.
- 1944 — Writer Susan K. Williams is born.
- 1951 — Lyricist Machiko Ryū is born.
- 1956 — Manuel Tadros (Canadian French voice of Ironhide and Dr. Powell in the live-action film series) is born.
- 1957 — Kei Majima (voice of Crazybolt) is born.
- 1959 — Mario Bombardieri (Italian voice of Kup, Alpha Quintesson, Constructicon Maximus, Crumplezone, Soundwave and Galvatron) is born.
- 1970 — Yūto Kazama (Japanese voice of Snarl and Menasor) is born.
- 1970 — Tony Hale (JPL Engineer from The Last Knight) is born.
- 1974 — Belgian actor Frederik Haùgness is born.
- 1981 — Choi Seung-hoon (Korean voice of Fixit) is born.
- 1982 — Lacey Chabert (voice of Dani Burns) is born.
- 1985 — The Transformers episode "Enter the Nightbird" premieres in the U.S.
- 1986 — The Transformers episode "Chaos" premieres in the U.S.
- 1988 — Isabela Dentini (Brazilian voice of Arcee) is born.
- 1990 — The Super-God Masterforce episode "Sixshot the Vagabond" premieres in Malaysia.
- 1991 — Illustrator Cachét Whitman is born.
- 1996 — The Beast Wars episode "Fallen Comrades" premieres in the U.S.
- 1996 — The Headmasters Set is released on Laserdisc in Japan by Takara.
- 1998 — The Beast Wars II episode "Megastorm Reborn" premieres in Japan.
- 2000 — Isabella Guarnieri (Brazilian voice of Hank) is born.
- 2002 — Pre-orders close for the e-HOBBY exclusive Megaplex toy.
- 2004 — Takara releases Super Link SC-23 Hot Shot Fire, SC-24 Roadbuster Wild, SC-25 Skyfire Sonic, SC-26 Superion, SD-19 Nightscream Reverse, and SD-20 Galvatron General.
- 2006 — BotCon 2006 continues. Dealer room opens, panels, "casino night" and dinner.
- 2008 — The MH-53 Pave Low helicopter (Blackout's alternate mode in Transformers) is officially retired from active service in the United States Air Force.
- 2010 — Miroslav Bijelić (Serbian voice of Soundwave) passes away at age 73.
- 2011 — Dark of the Moon is released on DVD and Blu-Ray disc in the US by Paramount Pictures.
- 2011 — The Transformers: Prime episode Darkness Rising, Part 2 premieres in Germany.
- 2013 — The Transformers: Prime episode "Darkmount, NV" premieres in Germany.
- 2014 — Age of Extinction is released on DVD and Blu-Ray disc in the US by Paramount Pictures.
- 2014 — Peter Cullen and Optimus Prime attend a cement printing ceremony outside of Grauman's Chinese Theater, immortalizing their hand (and tire) prints in cement for the Hollywood Walk of Fame.
- 2015 — The Transformers (vol.2) #45 and More than Meets the Eye #45 are released by IDW Publishing.
- 2015 — The announced shutdown date for the Transformers Legends mobile game. The servers remained up and running up through October 6.
- 2015 — The Transformers: Age of Extinction mobile game shuts down.
- 2015 — The Robots in Disguise episode "Lockout" premieres in Hungary.
- 2015 — Caio César (Brazilian voice of Carlos Lopez) dies at age 27.
- 2016 — The Rescue Bots episode "The New Recruits" premieres in Hungary.
- 2017 — The Robots in Disguise episode "Prisoner Principles" premieres on Cartoon Network.
- 2017 — TakaraTomy releases Legends LG-44 Sharktron and Sweeps, LG-45 Targetmaster Hot Rodimus (with Firebolt), and LG-46 Targetmaster Cher (with Recoil) and rereleases Movie The Best MB-EX Laserbeak.
- 2018 — The Cyberverse episode "Megatron Is My Hero" airs on Teletoon in Canada.
- 2019 — TakaraTomy releases Siege SG-29 Autobot Smashdown, SG-30 Decepticon Blackjack & Hyperdrive, SG-31 Red Alert, and SG-32 Autobot Springer.
- 2019 — Marshall Efron (voice of Hun-Grrr (Beast mode) dies at age 81.
- 2020 — Transformers vs. The Terminator #4 is released by IDW Publishing.
- 2021 — The official reveal and pre-orders go up for Kingdom Golden Disk Collection Terrorsaur.
- 2022 — The first day of the Hasbro Pulse Con 2022, The Legacy: Evolution toyline first wave as well as Shattered Glass Collection Soundwave (with Ravage and Laserbeak is officially revealed and pre-orders go up for it.
- 2023 — TakaraTomy releases MPG MPG-05 Trainbot Seizan, Transformers: Legacy TL-36 Thundercracker, TL-37 Nemesis Prime, TL-38 Senator Crosscut, TL-39 Crashbar, TL-40 Twincast and Studio Series SS-110 Ironhide, SS-111 Dinobot Snarl and Beast Wars: Super Lifeform Transformers Again BWVS-02 Tough Showdown: Rhinox VS Scorpos.
- 2023 —The Transformers: EarthSpark episode "Prime Time" premieres in France.
- 2023 —The Transformers: EarthSpark episode "The Battle of Witwicky" premieres in Hungary.
- 2025 — Preorders for the Threezero DLX BB Starscream & MDLX Thrust go up.