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-rw-r--r--module/datetime/util.scm3
1 files changed, 3 insertions, 0 deletions
diff --git a/module/datetime/util.scm b/module/datetime/util.scm
index 681dd868..2a85c928 100644
--- a/module/datetime/util.scm
+++ b/module/datetime/util.scm
@@ -85,6 +85,8 @@
(zeller J (1- K) (+ m 12) (day date))
(zeller J K (month date) (day date)))))
+
+
;; Given a date, returns the earliest start of week going backwards from that date.
;; sön 22 mar 2020 20:09:57 CET
;; @example
@@ -178,6 +180,7 @@
((#\a) (display (week-day-name (week-day date) 3)))
((#\b) (display (locale-month-short (month date))))
((#\B) (display (locale-month (month date))))
+ ((#\Z) (when (equal? "UTC" (get-timezone datetime)) (display "Z")))
(else (unless allow-unknown?
(error 'datetime->string "Invalid format token ~a" token))))
#f)