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+;;; chrono-tools.el --- Config for Date and Time-Related Utils -*- lexical-binding: t; -*-
+;; author Craig Jennings <c@cjennings.net>
+;;; Commentary:
+;;
+;; This module centralizes configuration for Emacs time-related tools:
+;;
+;; – world-clock: predefined city list and custom time format
+;; – calendar: quick navigation keybindings by day, month, and year
+;; – tmr: lightweight timer setup with sounds, notifications, and history
+;;
+;;; Code:
+
+(use-package time
+  :ensure nil ;; built-in
+  :defer 0.5
+  :bind ("C-x c" . world-clock)
+  :config
+  (setq world-clock-list
+		'(("Pacific/Honolulu"    " Honolulu")
+		  ("America/Los_Angeles" " San Francisco, LA")
+		  ("America/Chicago"     " Chicago, New Orleans")
+		  ("America/New_York"    " New York, Boston")
+		  ("Etc/UTC"             " UTC =================")
+		  ("Europe/London"       " London, Lisbon")
+		  ("Europe/Paris"        " Paris, Berlin, Rome")
+		  ("Europe/Athens"       " Athens, Istanbul, Moscow")
+		  ("Asia/Kolkata"        " India")
+		  ("Asia/Shanghai"       " Shanghai, Singapore")
+		  ("Asia/Tokyo"          " Tokyo, Seoul")))
+  (setq world-clock-time-format " %a, %d %b @ %I:%M %p %Z"))
+
+(use-package calendar
+  :ensure nil ;; built-in
+  :defer 0.5
+  :bind (("M-#" . calendar)
+		 :map calendar-mode-map
+		 (","   . calendar-backward-day)
+		 ("."   . calendar-forward-day)
+		 ("<"   . calendar-backward-month)
+		 (">"   . calendar-forward-month)
+		 ("M-," . calendar-backward-year)
+		 ("M-." . calendar-forward-year)))
+
+(use-package tmr
+  :defer 0.5
+  :bind ("M-t" . tmr-prefix-map)
+  :config
+  (setq tmr-sound-file "/usr/share/sounds/freedesktop/stereo/alarm-clock-elapsed.oga"
+		tmr-notification-urgency 'normal
+		tmr-descriptions-list 'tmr-description-history))
+
+
+(provide 'chrono-tools)
+;;; chrono-tools.el ends here.
+
+;; --------------------------------- ERT Tests ---------------------------------
+;; Run these tests with M-x ert RET t RET
+
+(ert-deftest chrono-tools/tmr-sound-file-exists ()
+  "Test that `tmr-sound-file` points to an existing file."
+  (require 'tmr)
+  (should (file-exists-p tmr-sound-file)))