diff --git a/src/main.rs b/src/main.rs
index 0ca9a35..41eade2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,15 +22,26 @@ struct Flags {
 
    #[arg(short = 't', long = "tag")]
    tag: Option<String>,
+
+   #[arg(short = 'c', long = "clock")]
+   clock: bool,
 }
 
 fn main() {
    let flags = Flags::parse();
 
+   clock(&flags.f, &flags.clock).unwrap();
    add(&flags.f, &flags.add, &flags.tag).unwrap();
    log(&flags.f, &flags.log, &flags.since).unwrap();
 }
 
+fn clock(f: &String, clock: &bool) -> Result<(), String> {
+   match clock {
+      true => add(&f, &Some("".to_string()), &None),
+      false => Ok(()),
+   }
+}
+
 fn add(f: &String, x: &Option<String>, tag: &Option<String>) -> Result<(), String> {
    match x {
       Some(x) => {