diff --git a/bash/sheconds b/bash/sheconds
new file mode 100755
index 0000000..b69fc3c
--- /dev/null
+++ b/bash/sheconds
@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+# The variables are checked dynamically
+# shellcheck disable=SC2034
+seconds() {
+  local day hour minute second span time
+  (( day = $1 / 60 / 60 / 24 ))
+  (( hour = $1 / 60 / 60 % 24 ))
+  (( minute = $1 / 60 % 60 ))
+  (( second = $1 % 60 ))
+
+  for span in day hour minute second; do
+    if (( ${!span} )); then
+      if [[ $time ]]; then
+        time+=", "
+      fi
+
+      time+="${!span} $span"
+
+      if (( ${!span} > 1 )); then
+        time+=s
+      fi
+    fi
+  done
+
+  printf %s "$time"
+
+  if [[ -t 1 ]]; then
+    printf '\n'
+  fi
+}
+
+seconds "${1-3628800}"