diff --git a/autoload/utils.vim b/autoload/utils.vim
index 8486773..d1933a2 100644
--- a/autoload/utils.vim
+++ b/autoload/utils.vim
@@ -145,8 +145,12 @@ function! utils#Get_titlestr() abort
   return l:title_str
 endfunction
 
-" Output current time in ISO format.
-function! utils#iso_time() abort
+" Output current time or unix timestamp in human-readable format.
+function! utils#iso_time(timestamp) abort
+  if a:timestamp
+    return strftime('%Y-%m-%d %H:%M:%S%z', a:timestamp)
+  endif
+
   return strftime('%Y-%m-%d %H:%M:%S%z')
 endfunction
 
diff --git a/plugin/command.vim b/plugin/command.vim
index a8e2998..d751831 100644
--- a/plugin/command.vim
+++ b/plugin/command.vim
@@ -5,3 +5,6 @@ command! -bar -bang -nargs=+ -complete=file Edit call utils#MultiEdit([<f-args>]
 call utils#Cabbrev('edit', 'Edit')
 
 call utils#Cabbrev('man', 'Man')
+
+" show current date and time in human readable format
+command! -nargs=? Datetime echo utils#iso_time(<q-args>)