diff --git a/README.md b/README.md
index c5d169644..7e3e7c63f 100644
--- a/README.md
+++ b/README.md
@@ -354,6 +354,7 @@ A third-party Golang SDK for Jackett is available from [webtor-io/go-jackett](ht
  * HD-Torrents (HDT)
  * HD4FANS [![(invite needed)][inviteneeded]](#)
  * HDArea (HDA)
+ * HDAtmos
  * HDBits
  * HDCenter [![(invite needed)][inviteneeded]](#)
  * HDChina (HDWing)
diff --git a/src/Jackett.Common/Definitions/hdatmos.yml b/src/Jackett.Common/Definitions/hdatmos.yml
new file mode 100644
index 000000000..7562a673b
--- /dev/null
+++ b/src/Jackett.Common/Definitions/hdatmos.yml
@@ -0,0 +1,175 @@
+---
+id: hdatmos
+name: HDAtmos
+description: "HDAtmos is a CHINESE Private Torrent Tracker for HD MOVIES / TV / GENERAL"
+language: zh-cn
+type: private
+encoding: UTF-8
+links:
+  - https://hdatmos.club/
+
+caps:
+  categorymappings:
+    - {id: 401, cat: Movies, desc: "Movies/电影"}
+    - {id: 404, cat: TV/Documentary, desc: "Documentaries/纪录片"}
+    - {id: 405, cat: TV/Anime, desc: "Animations/动漫"}
+    - {id: 402, cat: TV, desc: "TV Series/电视剧"}
+    - {id: 422, cat: PC/Games, desc: "Games/游戏"}
+    - {id: 423, cat: TV, desc: "TV Shows/综艺"}
+    - {id: 406, cat: Audio/Video, desc: "MusicVideo/MV演唱会"}
+    - {id: 407, cat: TV/Sport, desc: "Sports/体育"}
+    - {id: 409, cat: PC/0day, desc: "Software/软件"}
+    - {id: 424, cat: Other, desc: "Misc/其他"}
+    - {id: 408, cat: Audio, desc: "HQ Audio/音乐"}
+
+  modes:
+    search: [q]
+    tv-search: [q, season, ep, imdbid]
+    movie-search: [q, imdbid]
+    music-search: [q]
+    book-search: [q]
+
+settings:
+  - name: username
+    type: text
+    label: Username
+  - name: password
+    type: password
+    label: Password
+  - name: freeleech
+    type: checkbox
+    label: Search freeleech only
+    default: false
+  - name: info_tpp
+    type: info
+    label: Results Per Page
+    default: For best results, change the <b>Torrents per page:</b> setting to <b>100</b> on your account profile.
+  - name: sort
+    type: select
+    label: Sort requested from site
+    default: 4
+    options:
+      4: created
+      7: seeders
+      5: size
+      1: title
+  - name: type
+    type: select
+    label: Order requested from site
+    default: desc
+    options:
+      desc: desc
+      asc: asc
+
+login:
+  path: login.php
+  method: form
+  form: form[action="takelogin.php"]
+  captcha:
+    type: image
+    selector: img[alt="CAPTCHA"]
+    input: imagestring
+  inputs:
+    username: "{{ .Config.username }}"
+    password: "{{ .Config.password }}"
+    logout: ""
+    securelogin: ""
+    ssl: yes
+    trackerssl: ""
+  error:
+    - selector: td.embedded:has(h2:contains("失败"))
+      message:
+        selector: td.text
+  test:
+    path: index.php
+    selector: a[href="logout.php"]
+
+search:
+  paths:
+    - path: torrents.php
+  inputs:
+    $raw: "{{ range .Categories }}cat{{.}}=1&{{end}}"
+    search: "{{ if .Query.IMDBID }}{{ .Query.IMDBID }}{{ else }}{{ .Keywords }}{{ end }}"
+    # 0 incldead, 1 active, 2 dead
+    incldead: 0
+    # 0 all, 1 normal, 2 free, 3 2x, 4 2xfree, 5 50%, 6 2x50%, 7 30%
+    spstate: "{{ if .Config.freeleech }}2{{ else }}0{{ end }}"
+    # 0 title, 1 descr, 3 uploader, 4 imdburl
+    search_area: "{{ if .Query.IMDBID }}4{{ else }}0{{ end }}"
+    # 0 AND, 1 OR, 2 exact
+    search_mode: 0
+    sort: "{{ .Config.sort }}"
+    type: "{{ .Config.type }}"
+
+  rows:
+    selector: table.torrents > tbody > tr:has(table.torrentname)
+
+  fields:
+    category:
+      selector: a[href^="?cat="]
+      attribute: href
+      filters:
+        - name: querystring
+          args: cat
+    title:
+      selector: a[href^="details.php?id="]
+    title:
+      optional: true
+      selector: a[title][href^="details.php?id="]
+      attribute: title
+    details:
+      selector: a[href^="details.php?id="]
+      attribute: href
+    download:
+      selector: a[href^="download.php?id="]
+      attribute: href
+    imdb:
+      selector: a[href*="imdb.com/title/tt"]
+      attribute: href
+    date:
+      # time type: time elapsed (default)
+      selector: td:nth-child(4) > span[title]
+      attribute: title
+      optional: true
+      filters:
+        - name: append
+          args: " +08:00" # CST
+        - name: dateparse
+          args: "2006-01-02 15:04:05 -07:00"
+    date:
+      # time added
+      selector: td:nth-child(4):not(:has(span))
+      optional: true
+      filters:
+        - name: append
+          args: " +08:00" # CST
+        - name: dateparse
+          args: "2006-01-0215:04:05 -07:00"
+    size:
+      selector: td:nth-child(5)
+    seeders:
+      selector: td:nth-child(6)
+    leechers:
+      selector: td:nth-child(7)
+    grabs:
+      selector: td:nth-child(8)
+    downloadvolumefactor:
+      case:
+        img.pro_free: 0
+        img.pro_free2up: 0
+        img.pro_50pctdown: 0.5
+        img.pro_50pctdown2up: 0.5
+        img.pro_30pctdown: 0.3
+        "*": 1
+    uploadvolumefactor:
+      case:
+        img.pro_50pctdown2up: 2
+        img.pro_free2up: 2
+        img.pro_2up: 2
+        "*": 1
+    description:
+      selector: td:nth-child(2)
+      remove: a, img
+    minimumratio:
+      text: 0.81
+# NexusPHP Standard v1.5 Beta 4