Index: openacs-4/packages/acs-lang/tcl/test/acs-lang-localization-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-lang/tcl/test/acs-lang-localization-procs.tcl,v
diff -u -r1.4.2.15 -r1.4.2.16
--- openacs-4/packages/acs-lang/tcl/test/acs-lang-localization-procs.tcl	7 Feb 2024 09:27:18 -0000	1.4.2.15
+++ openacs-4/packages/acs-lang/tcl/test/acs-lang-localization-procs.tcl	8 Feb 2024 12:49:16 -0000	1.4.2.16
@@ -261,6 +261,14 @@
 
         foreach from $timezones {
             set from [lindex $from 0]
+            try {
+                clock scan 99999 -timezone $from
+            } on error {errorMsg} {
+                if {[string match "time zone *not found" $errorMsg]} {
+                    aa_log "warning: Tcl does not know about time zome $from"
+                    continue
+                }
+            }
             aa_false "Converting valid date '2021-02-18 15:04:59' from valid timezone '$from' to 'UTC' does not return empty or 0" \
                 [expr {[lc_time_local_to_utc "2021-02-18 15:04:59" $from] eq ""}]
         }