january
1月S11
S12
ASSEMBLE

2日:
[teaser] "Kotone.SSS"
S11 kotone's teaser drops.due to her stage name being just "kotone", we will not be referring to her with her surname, e.g. "kamimoto kotone".5日:
[signal] "This is Kotone"
S11 kotone moves into the HAUS.16日:
[twt] S12 pre-teaser drop
modhaus announces S12's teaser.18日:
[teaser] "KwakYeonJi.SSS"
S12 kwak yeonji's teaser drops.20日:
[signal] "Going to the Tokyo HAUS"
S12 kwak yeonji moves into the HAUS.31日:
[mv teaser] "tripleS(트리플에스) ‘Rising’ Commercial"
a teaser for "Rising" drops.

may
5月S1
dijkstra
S2
S3

1日:
[teaser] "YoonSeoYeon.SSS"
S1 yoon seoyeon's teaser drops.4日:
[cosmos] "dijkstra"
a compilation of S1 yoon seoyeon and other s' video diaries, with the theme "s doesn't know the other s".9日:
[signal] "Introducing our Haus"
S1 yoon seoyeon moves into the HAUS.this is the first SIGNAL from tripleS.16日:
[twt] S2 pre-teaser drop
modhaus announces S2's teaser.from here on, the captions use "teaser drop" instead of "cosmos booting" (e.g. "S2 teaser drop" in this case).17日:
[teaser] "JeongHyeRin.SSS"
S2 jeong hyerin's teaser drops.the background music for this video is a song called "Dimension", that will be recorded in future by the big S.20日:
[song] "Frankenstein by YoonSeoYeon.SSS"
seoyeon's cover of "Frankenstein" by claire rosinkranz is released.23日:
[signal] "Hello HyeRin"
S2 jeong hyerin moves into the HAUS.28日:
[twt] S3 pre-teaser drop
modhaus announces S3's teaser.

june
6月S3
new york
S4

1日:
[teaser] "LeeJiWoo.SSS"
S3 lee jiwoo's teaser drops.7日:
[signal] "Three Girls"
S3 lee jiwoo moves into the HAUS.15日:
[twt] S4 pre-teaser drop
modhaus announces S4's teaser.19日:
[signal] "Gonna Depart"
S1-S3 leave for new york.22日:
[teaser] "KimChaeYeon.SSS"
S4 kim chaeyeon's teaser drops.27日:
[signal] "Gonna Return"
S1-S3 return to korea.29日:
[signal] "ChaeYeon in the HAUS"
S4 kim chaeyeon moves into the HAUS.

july
7月S5
dimension
objekt

11日:
[teaser] "Who is S5"
S5 kim yooyeon's pre-teaser drop video drops.this is the only pre-teaser drop done on youtube instead of twitter from S1-S10.15日:
[teaser] "KimYooYeon.SSS"
S5 kim yooyeon's teaser drops.18日:
[signal] "YooYeon's Arrival"
S5 kim yooyeon moves into the HAUS.it is also announced that S1-S5 will be recording "Dimension", the track heard in "JeongHyeRin.SSS".as of dec 2022, a recording of "Dimension" with S1-S5 only has not been released.28日:
[cosmos] "objekt"
a brief introduction to objekts, tripleS's special photocards.

august
8月S6
objekt
S7

2日:
[twt] S6 pre-teaser drop
modhaus announces S6's teaser.8日:
[teaser] "KimSooMin.SSS"
S6 kim soomin's teaser drops.9日:
[objekt] "YoonSeoYeon.objekt"
seoyeon promotes her objekts that were released on the same day.10日:
[objekt] "JeongHyeRin.objekt"
hyerin promotes her objekts that were released on the same day.11日:
[signal] "KimSooMin, born in 2007"
S6 kim soomin moves into the HAUS.due to HAUS 1 only having 5 beds, some of the girls have been prompted to move to HAUS 2. soomin will live in HAUS 2 by default.12日:
[signal] "New Dijkstra Theory"
a few girls move from HAUS 1 to HAUS 2.[objekt] "LeeJiWoo.objekt"
jiwoo promotes her objekts that were released on the same day.14日:
[objekt] "KimChaeYeon.objekt"
chaeyeon promotes her objekts that were released on the same day.16日:
[objekt] "KimYooYeon.objekt"
yooyeon promotes her objekts that were released on the same day.20日:
[twt] S7 pre-teaser drop
modhaus announces S7's teaser.22日:
[teaser] "KimNaKyoung.SSS"
S7 kim nakyoung's teaser drops.we will be referring to nakyoung as "naky" in future.[objekt] "KimSooMin.objekt"
soomin promotes her objekts that were released on the same day.25日:
[signal] "Kim NaKyoung"
S7 kim nakyoung moves into the HAUS.29日:
[objekt] "KimNaKyoung.objekt"
naky promotes her objekts that were released on the same day.

september
9月S8
grand gravity

7日:
[twt] S8 pre-teaser drop
modhaus announces S8's teaser.9日:
[teaser] "GongYuBin.SSS"
S8 gong yubin's teaser drops.the teaser also teases "GRAVITY", which turns out to be the first grand gravity.12日:
[signal] "My Name Is Gong YuBin"
S8 gong yubin moves into the HAUS.14日:
[dance] "Pwr Puff (Demo) by NaKyoung, HyeRin.SSS"
hyerin and naky's dance cover is released.16日:
[signal] "Gonna Debut With You"
the first grand gravity is announced.the members will be sorted into four pairs. in each pair, each member will be chosen to be in one unit and the other member must be in the other unit.the units are Acid Angel from Asia (AAA) or +(KR)ystal Eyes (KRE or +(KR)E), and are decided by fan voting through the cosmo app.19日:
[song] "They Don’t Know by SeoYeon, JiWoo, YooYeon, NaKyoung.SSS"
all of the odd-numbered S' cover of "They Don't Know" by ariana grande is released.[objekt] "GongYuBin.objekt"
yubin promotes her objekts that were released on the same day.21-24日:
[grand gravity]
"SeoYeon ↔️ NaKyoung"
"HyeRin ↔️ SooMin"
"ChaeYeon ↔️ YuBin"
"JiWoo ↔️ YooYeon"
each day had one round of grand gravity. there was no twitter announcement for the last round.AAA: nakyoung, hyerin, yubin, yooyeon
KRE: seoyeon, soomin, chaeyeon, jiwoo

october
10月AAA

22日:
[mv teaser] "Acid Angel from Asia.SSS ‘Generation’ Teaser (Acid Ver.)"
[mv teaser] "Acid Angel from Asia.SSS ‘Generation’ Teaser (Base Ver.)"
two MV teasers for AAA's "Generation" drop.23日:
[highlight medley] "Acid Angel from Asia.SSS ‘ACCESS’ Highlight Medley"
the highlight medley for AAA's "ACCESS" album drops.28日:
[mv] "Acid Angel from Asia.SSS ‘Generation’ MV"
AAA debuts.

november
11月S9
S10 (???)

6日:
[SIGNAL saga] "tripleS Signal Saga ATOM01"
a video recapping the signals of S1-S8 moving in. at the end, the words "the next S is coming soon" are shown.7日:
[twt] S9 pre-teaser drop
modhaus announces S9's teaser.9日:
[teaser] "Kaede.SSS"
S9 kaede's teaser drops.due to her stage name being just "kaede", we will not be referring to her with her surname, e.g. "yamada kaede".14日:
[signal] "Welcome Kaede"
S9 kaede moves into the HAUS.16日:
[objekt] "Kaede.objekt"
kaede promotes her objekts that were released on the same day.25日:
[signal] "Gonna Debut as a Group of 10"
a new naturally occurring DIMENSION is announced, consisting of all available members from S1-S10. the announcement is made separately to S1-S9 and S10, who had her face blurred throughout the SIGNAL.(there was also a rather emotional scene where S10 cried after finding out she was S10 right before the event gravity announcement.)there would also be an "event gravity" for the title track, which was an knockout-style tournament consisting of 8 songs, where the winner would be the title track.28日:
[rumor] unrevealed tripleS member found on OST credits
a picture of the credits of the drama "Reborn Rich" showed this line:"너를 사랑하고 있어 - tripleS 서다현"
"i'm in love with you (the OST title) - tripleS seo dahyun"this picture circulated on twitter and other platforms. from then on, "seo dahyun" was rumored to be S10.

december
12月S10
event gravity

1-4日:
[event gravity]
"Quarterfinal Day 1"
"Quarterfinal Day 2"
"Quarterfinal Day 3"
"Quarterfinal Day 4"
the first four days of event gravity (quarterfinals).b wins against a.
c wins against d.
f wins against e.
g wins against h.3日:
[twt] S10 early reveal
in the most unconventional fashion, MODHAUS confirms the rumors of seo dahyun being S10, saying "Introducing tripleS' S10 Seo DaHyun through an OST."5-6日:
[event gravity]
"Semifinal Day 5"
"Semifinal Day 6"
the next two days of event gravity (semifinals).b wins against c.
f wins against g.5日:
[twt] S10 pre-teaser drop
modhaus announces S10's teaser.7日:
[event gravity]
"Final Day 7"
the final day of event gravity (finals).b wins against f and becomes the title track.a lot of people get depressed.9日:
[teaser] "SeoDaHyun.SSS"
S10 seo dahyun's teaser drops.12日:
[signal] "DaHyun’s Gonna Sing"
S10 seo dahyun moves into the HAUS.13日:
[objekt] "SeoDaHyun.objekt"
dahyun promotes her objekts that were released on the same day.28日:
[cosmos] "signalize"
the first cosmos video in a long time. a sequel to "signalis".30日:
[twt] S11 pre-teaser drop
modhaus announces S11's teaser.