diff --git a/crates/nu-command/src/system/ps.rs b/crates/nu-command/src/system/ps.rs
index 6f39061dab..cece41e56f 100644
--- a/crates/nu-command/src/system/ps.rs
+++ b/crates/nu-command/src/system/ps.rs
@@ -1,3 +1,5 @@
+#[cfg(target_os = "macos")]
+use chrono::{Local, TimeZone};
 #[cfg(windows)]
 use itertools::Itertools;
 use nu_engine::command_prelude::*;
@@ -175,6 +177,10 @@ fn run_ps(
             #[cfg(target_os = "macos")]
             {
                 record.push("cwd", Value::string(proc.cwd(), span));
+                let timestamp = Local
+                    .timestamp_nanos(proc.start_time * 1_000_000_000)
+                    .into();
+                record.push("start_time", Value::date(timestamp, span));
             }
         }
 
diff --git a/crates/nu-system/src/macos.rs b/crates/nu-system/src/macos.rs
index e9b927c1fe..8d6ab59d4b 100644
--- a/crates/nu-system/src/macos.rs
+++ b/crates/nu-system/src/macos.rs
@@ -25,6 +25,7 @@ pub struct ProcessInfo {
     pub curr_res: Option<RUsageInfoV2>,
     pub prev_res: Option<RUsageInfoV2>,
     pub interval: Duration,
+    pub start_time: i64,
 }
 
 pub fn collect_proc(interval: Duration, _with_thread: bool) -> Vec<ProcessInfo> {
@@ -94,6 +95,7 @@ pub fn collect_proc(interval: Duration, _with_thread: bool) -> Vec<ProcessInfo>
         let curr_time = Instant::now();
         let interval = curr_time.saturating_duration_since(prev_time);
         let ppid = curr_task.pbsd.pbi_ppid as i32;
+        let start_time = curr_task.pbsd.pbi_start_tvsec as i64;
 
         let proc = ProcessInfo {
             pid,
@@ -107,6 +109,7 @@ pub fn collect_proc(interval: Duration, _with_thread: bool) -> Vec<ProcessInfo>
             curr_res,
             prev_res,
             interval,
+            start_time,
         };
 
         ret.push(proc);