diff --git a/conf/curl/autoload_configs/timezones.conf.xml b/conf/curl/autoload_configs/timezones.conf.xml
index 85c805ff25..397e9a979f 100644
--- a/conf/curl/autoload_configs/timezones.conf.xml
+++ b/conf/curl/autoload_configs/timezones.conf.xml
@@ -13,7 +13,7 @@
 	<zone name="Africa/Blantyre" value="CAT-2" />
 	<zone name="Africa/Brazzaville" value="WAT-1" />
 	<zone name="Africa/Bujumbura" value="CAT-2" />
-	<zone name="Africa/Cairo" value="EEST" />
+	<zone name="Africa/Cairo" value="EET-2EEST,M4.5.5/1,M9.5.5/3" />
 	<zone name="Africa/Casablanca" value="WET0" />
 	<zone name="Africa/Ceuta" value="CET-1CEST,M3.5.0,M10.5.0/3" />
 	<zone name="Africa/Conakry" value="GMT0" />
diff --git a/conf/insideout/autoload_configs/timezones.conf.xml b/conf/insideout/autoload_configs/timezones.conf.xml
index 85c805ff25..397e9a979f 100644
--- a/conf/insideout/autoload_configs/timezones.conf.xml
+++ b/conf/insideout/autoload_configs/timezones.conf.xml
@@ -13,7 +13,7 @@
 	<zone name="Africa/Blantyre" value="CAT-2" />
 	<zone name="Africa/Brazzaville" value="WAT-1" />
 	<zone name="Africa/Bujumbura" value="CAT-2" />
-	<zone name="Africa/Cairo" value="EEST" />
+	<zone name="Africa/Cairo" value="EET-2EEST,M4.5.5/1,M9.5.5/3" />
 	<zone name="Africa/Casablanca" value="WET0" />
 	<zone name="Africa/Ceuta" value="CET-1CEST,M3.5.0,M10.5.0/3" />
 	<zone name="Africa/Conakry" value="GMT0" />
diff --git a/conf/sbc/autoload_configs/timezones.conf.xml b/conf/sbc/autoload_configs/timezones.conf.xml
index 85c805ff25..397e9a979f 100644
--- a/conf/sbc/autoload_configs/timezones.conf.xml
+++ b/conf/sbc/autoload_configs/timezones.conf.xml
@@ -13,7 +13,7 @@
 	<zone name="Africa/Blantyre" value="CAT-2" />
 	<zone name="Africa/Brazzaville" value="WAT-1" />
 	<zone name="Africa/Bujumbura" value="CAT-2" />
-	<zone name="Africa/Cairo" value="EEST" />
+	<zone name="Africa/Cairo" value="EET-2EEST,M4.5.5/1,M9.5.5/3" />
 	<zone name="Africa/Casablanca" value="WET0" />
 	<zone name="Africa/Ceuta" value="CET-1CEST,M3.5.0,M10.5.0/3" />
 	<zone name="Africa/Conakry" value="GMT0" />
diff --git a/conf/vanilla/autoload_configs/timezones.conf.xml b/conf/vanilla/autoload_configs/timezones.conf.xml
index 85c805ff25..397e9a979f 100644
--- a/conf/vanilla/autoload_configs/timezones.conf.xml
+++ b/conf/vanilla/autoload_configs/timezones.conf.xml
@@ -13,7 +13,7 @@
 	<zone name="Africa/Blantyre" value="CAT-2" />
 	<zone name="Africa/Brazzaville" value="WAT-1" />
 	<zone name="Africa/Bujumbura" value="CAT-2" />
-	<zone name="Africa/Cairo" value="EEST" />
+	<zone name="Africa/Cairo" value="EET-2EEST,M4.5.5/1,M9.5.5/3" />
 	<zone name="Africa/Casablanca" value="WET0" />
 	<zone name="Africa/Ceuta" value="CET-1CEST,M3.5.0,M10.5.0/3" />
 	<zone name="Africa/Conakry" value="GMT0" />
diff --git a/src/include/switch_core.h b/src/include/switch_core.h
index 1fda42588c..67ae2727aa 100644
--- a/src/include/switch_core.h
+++ b/src/include/switch_core.h
@@ -2131,6 +2131,7 @@ SWITCH_DECLARE(void) switch_time_sync(void);
  \return The current epoch time 
 */
 SWITCH_DECLARE(time_t) switch_epoch_time_now(time_t *t);
+SWITCH_DECLARE(const char *) switch_lookup_timezone(const char *tz_name);
 SWITCH_DECLARE(switch_status_t) switch_strftime_tz(const char *tz, const char *format, char *date, size_t len, switch_time_t thetime);
 SWITCH_DECLARE(switch_status_t) switch_time_exp_tz_name(const char *tz, switch_time_exp_t *tm, switch_time_t thetime);
 SWITCH_DECLARE(void) switch_load_network_lists(switch_bool_t reload);
diff --git a/src/mod/applications/mod_spandsp/mod_spandsp_fax.c b/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
index 0b8f5d4f61..c15f9afe67 100644
--- a/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
+++ b/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
@@ -674,6 +674,7 @@ static switch_status_t spanfax_init(pvt_t *pvt, transport_mode_t trans_mode)
 	t38_terminal_state_t *t38;
 	t30_state_t *t30;
 	const char *tmp;
+    const char *tz;
 	int fec_entries = DEFAULT_FEC_ENTRIES;
 	int fec_span = DEFAULT_FEC_SPAN;
 
@@ -844,8 +845,12 @@ static switch_status_t spanfax_init(pvt_t *pvt, transport_mode_t trans_mode)
 	/* All the things which are common to audio and T.38 FAX setup */
 	t30_set_tx_ident(t30, pvt->ident);
 	t30_set_tx_page_header_info(t30, pvt->header);
-	if (pvt->timezone && pvt->timezone[0])
-		t30_set_tx_page_header_tz(t30, pvt->timezone);
+	if (pvt->timezone && pvt->timezone[0]) {
+		if ((tz = switch_lookup_timezone(pvt->timezone)))
+			t30_set_tx_page_header_tz(t30, tz);
+		else
+			t30_set_tx_page_header_tz(t30, pvt->timezone);
+	}
 
 	t30_set_phase_e_handler(t30, phase_e_handler, pvt);
 	t30_set_phase_d_handler(t30, phase_d_handler, pvt);
diff --git a/src/switch_time.c b/src/switch_time.c
index 96e4ec9937..fb9fea1de0 100644
--- a/src/switch_time.c
+++ b/src/switch_time.c
@@ -1110,7 +1110,7 @@ typedef struct {
 static switch_timezones_list_t TIMEZONES_LIST = { 0 };
 static switch_event_node_t *NODE = NULL;
 
-const char *switch_lookup_timezone(const char *tz_name)
+SWITCH_DECLARE(const char *) switch_lookup_timezone(const char *tz_name)
 {
 	char *value = NULL;