diff --git a/changelog.md b/changelog.md
index fbce9cb31..47522398b 100644
--- a/changelog.md
+++ b/changelog.md
@@ -7,6 +7,7 @@
 * `FIX` [#400](https://github.com/sumneko/lua-language-server/issues/400)
 * `FIX` [#402](https://github.com/sumneko/lua-language-server/issues/402)
 * `FIX` [#403](https://github.com/sumneko/lua-language-server/issues/403)
+* `FIX` [#404](https://github.com/sumneko/lua-language-server/issues/404)
 * `FIX` runtime errors
 
 ## 1.16.0
diff --git a/locale/en-us/meta.lua b/locale/en-us/meta.lua
index 179e6f4d9..ffb4fee76 100644
--- a/locale/en-us/meta.lua
+++ b/locale/en-us/meta.lua
@@ -335,6 +335,15 @@ os.rename                   = 'Renames the file or directory named `oldname` to
 os.setlocale                = 'Sets the current locale of the program.'
 os.time                     = 'Returns the current time when called without arguments, or a time representing the local date and time specified by the given table.'
 os.tmpname                  = 'Returns a string with a file name that can be used for a temporary file.'
+osdate.year                 = 'four digits'
+osdate.month                = '1-12'
+osdate.day                  = '1-31'
+osdate.hour                 = '0-23'
+osdate.min                  = '0-59'
+osdate.sec                  = '0-61'
+osdate.wday                 = 'weekday, 1–7, Sunday is 1'
+osdate.yday                 = 'day of the year, 1–366'
+osdate.isdst                = 'daylight saving flag, a boolean'
 
 package                     = ''
 require['<5.3']             = 'Loads the given module, returns any value returned by the given module(`true` when `nil`).'
diff --git a/locale/zh-cn/meta.lua b/locale/zh-cn/meta.lua
index e9fedf618..a054a464c 100644
--- a/locale/zh-cn/meta.lua
+++ b/locale/zh-cn/meta.lua
@@ -313,6 +313,15 @@ os.rename                   = '将名字为 `oldname` 的文件或目录更名
 os.setlocale                = '设置程序的当前区域。'
 os.time                     = '当不传参数时，返回当前时刻。 如果传入一张表，就返回由这张表表示的时刻。'
 os.tmpname                  = '返回一个可用于临时文件的文件名字符串。'
+osdate.year                 = '四位数字'
+osdate.month                = '1-12'
+osdate.day                  = '1-31'
+osdate.hour                 = '0-23'
+osdate.min                  = '0-59'
+osdate.sec                  = '0-61'
+osdate.wday                 = '星期几，1-7，星期天为 1'
+osdate.yday                 = '当年的第几天，1-366'
+osdate.isdst                = '夏令时标记，一个布尔量'
 
 package                     = ''
 require['<5.3']             = '加载一个模块，返回该模块的返回值（`nil`时为`true`）。'
diff --git a/meta/template/os.lua b/meta/template/os.lua
index 99b29f6a8..0ea096493 100644
--- a/meta/template/os.lua
+++ b/meta/template/os.lua
@@ -8,10 +8,30 @@ os = {}
 ---@return number
 function os.clock() end
 
+---@class osdate
+---#DES 'osdate.year'
+---@field year  integer
+---#DES 'osdate.month'
+---@field month integer
+---#DES 'osdate.day'
+---@field day   integer
+---#DES 'osdate.hour'
+---@field hour  integer
+---#DES 'osdate.min'
+---@field min   integer
+---#DES 'osdate.sec'
+---@field sec   integer
+---#DES 'osdate.wday'
+---@field wday  integer
+---#DES 'osdate.yday'
+---@field yday  integer
+---#DES 'osdate.isdst'
+---@field isdst boolean
+
 ---#DES 'os.date'
 ---@param format? string
 ---@param time?   integer
----@return string
+---@return string|osdate
 function os.date(format, time) end
 
 ---#DES 'os.difftime'