diff --git a/src/main.rs b/src/main.rs
index 1f137ca..e00b043 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,5 @@
 use anyhow::{Context, Result};
-use chrono::{DateTime, Local, Utc};
+use chrono::{DateTime, Duration, Local, Utc};
 use clap::{arg, command, Parser};
 use log::{debug, trace};
 use megalodon::{
@@ -126,15 +126,44 @@ async fn main() -> Result<()> {
         let mut f = match try_exists(&output).await {
             Ok(exists) if exists => {
                 debug!("Appending {}", output);
-                File::options().append(true).open(&output)?
+                let mut file = File::options().append(true).open(&output)?;
+                file.write("\n".as_bytes())?;
+                file
             }
             _ => {
                 debug!("Writing {}", output);
-                File::options()
+                let mut file = File::options()
                     .create(true)
                     .append(true)
                     .open(&output)
-                    .with_context(|| format!("Failed to create {}", output))?
+                    .with_context(|| format!("Failed to create {}", output))?;
+                file.write(format!("# {}\n\n", day.end.format("%Y-%m-%d")).as_bytes())?;
+                // TODO extract into a more general function
+                let week_ago = day.end - Duration::days(7);
+                // TODO check if the file exists
+                file.write(
+                    format!("[One week ago](diary:{})\n", week_ago.format("%Y-%m-%d")).as_bytes(),
+                )?;
+                let month_ago = day.end - Duration::days(30);
+                // TODO check if the file exists
+                file.write(
+                    format!("[One month ago](diary:{})\n", month_ago.format("%Y-%m-%d")).as_bytes(),
+                )?;
+                let half_year_ago = day.end - Duration::days(6 * 30);
+                // TODO check if the file exists
+                file.write(
+                    format!(
+                        "[Six months ago](diary:{})\n",
+                        half_year_ago.format("%Y-%m-%d")
+                    )
+                    .as_bytes(),
+                )?;
+                let year_ago = day.end - Duration::days(365);
+                // TODO check if the file exists
+                file.write(
+                    format!("[One year ago](diary:{})\n", year_ago.format("%Y-%m-%d")).as_bytes(),
+                )?;
+                file
             }
         };
         f.write_all(&reversed.join("\n\n").as_bytes())