CLDR-18236

Author: robertbastian

common/dtd/ldml.dtd

@@ -1718,7 +1718,7 @@ CLDR data files are interpreted according to the LDML specification (http://unic
 <!ATTLIST relativePeriod draft (approved | contributed | provisional | unconfirmed) #IMPLIED >
     <!--@METADATA-->
 
-<!ELEMENT timeZoneNames ( alias | ( hourFormat*, hoursFormat*, gmtFormat*, gmtZeroFormat*, regionFormat*, fallbackFormat*, fallbackRegionFormat*, abbreviationFallback*, preferenceOrdering*, singleCountries*, default*, zone*, metazone*, special* ) ) >
+<!ELEMENT timeZoneNames ( alias | ( hourFormat*, hoursFormat*, gmtFormat*, gmtZeroFormat*, gmtUnknownFormat*, regionFormat*, fallbackFormat*, fallbackRegionFormat*, abbreviationFallback*, preferenceOrdering*, singleCountries*, default*, zone*, metazone*, special* ) ) >
 <!ATTLIST timeZoneNames draft (approved | contributed | provisional | unconfirmed | true | false) #IMPLIED >
     <!--@METADATA-->
     <!--@DEPRECATED-->
@@ -1765,6 +1765,15 @@ CLDR data files are interpreted according to the LDML specification (http://unic
 <!ATTLIST gmtZeroFormat references CDATA #IMPLIED >
     <!--@METADATA-->
 
+<!ELEMENT gmtUnknownFormat ( #PCDATA ) >
+<!ATTLIST gmtUnknownFormat alt NMTOKENS #IMPLIED >
+    <!--@MATCH:literal/variant-->
+<!ATTLIST gmtUnknownFormat draft (approved | contributed | provisional | unconfirmed | true | false) #IMPLIED >
+    <!--@METADATA-->
+    <!--@DEPRECATED:true, false-->
+<!ATTLIST gmtUnknownFormat references CDATA #IMPLIED >
+    <!--@METADATA-->
+
 <!ELEMENT regionFormat ( #PCDATA ) >
 <!ATTLIST regionFormat type (standard | daylight) #IMPLIED >
 <!ATTLIST regionFormat alt NMTOKENS #IMPLIED >

common/dtd/ldml.xsd

@@ -4512,6 +4512,7 @@ Note: DTD @-annotations are not currently converted to .xsd. For full CLDR file
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="hoursFormat"/>
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="gmtFormat"/>
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="gmtZeroFormat"/>
+          <xs:element maxOccurs="unbounded" minOccurs="0" ref="gmtUnknownFormat"/>
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="regionFormat"/>
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="fallbackFormat"/>
           <xs:element maxOccurs="unbounded" minOccurs="0" ref="fallbackRegionFormat"/>

common/main/root.xml

@@ -3189,6 +3189,7 @@ Warnings: All cp values have U+FE0F characters removed. See /annotationsDerived/
 			<hourFormat>+HH:mm;-HH:mm</hourFormat>
 			<gmtFormat>GMT{0}</gmtFormat>
 			<gmtZeroFormat>GMT</gmtZeroFormat>
+			<gmtUnknownFormat>GMT+?</gmtUnknownFormat>
 			<regionFormat>{0}</regionFormat>
 			<regionFormat type="daylight">{0} (+1)</regionFormat>
 			<regionFormat type="standard">{0} (+0)</regionFormat>

common/supplemental-temp/coverageLevels2.xml

@@ -356,6 +356,7 @@ For terms of use, see http://www.unicode.org/copyright.html
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/fallbackFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtZeroFormat"/>
+		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtUnknownFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/hourFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/metazone[@type='GMT']/long/standard"/>
 

common/supplemental/coverageLevels.xml

@@ -381,6 +381,7 @@ For terms of use, see http://www.unicode.org/copyright.html
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/fallbackFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtZeroFormat"/>
+		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/gmtUnknownFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/hourFormat"/>
 		<coverageLevel	value="basic"	 	match="dates/timeZoneNames/metazone[@type='GMT']/long/standard"/>
 

docs/ldml/tr35-dates.md

@@ -1354,7 +1354,7 @@ For examples, see [Day Periods Chart](https://www.unicode.org/cldr/charts/46/sup
 ## <a name="Time_Zone_Names" href="#Time_Zone_Names">Time Zone Names</a>
 
 ```xml
-<!ELEMENT timeZoneNames (alias | (hourFormat*, gmtFormat*, gmtZeroFormat*, regionFormat*, fallbackFormat*, zone*, metazone*, special*)) >
+<!ELEMENT timeZoneNames (alias | (hourFormat*, gmtFormat*, gmtZeroFormat*, gmtUnknownFormat*, regionFormat*, fallbackFormat*, zone*, metazone*, special*)) >
 
 <!ELEMENT hourFormat ( #PCDATA ) >
 <!ELEMENT gmtFormat ( #PCDATA ) >
@@ -1470,7 +1470,8 @@ The following subelements of `<timeZoneNames>` are used to control the fallback
     <tr><td>"-1200"</td></tr>
 <tr><td rowspan="2">gmtFormat</td><td>"GMT{0}"</td><td>"GMT-0800"</td></tr>
     <tr><td>"{0}ВпГ"</td><td>"-0800ВпГ"</td></tr>
-<tr><td>gmtZeroFormat</td><td>"GMT"</td><td>Specifies how GMT/UTC with no explicit offset (implied 0 offset) should be represented.</td></tr>
+<tr><td>gmtZeroFormat</td><td>"GMT"</td><td>Specifies how GMT/UTC with an offset of zero should be represented.</td></tr>
+<tr><td>gmtUnknownFormat</td><td>"GMT"</td><td>Specifies how GMT/UTC with an unknown offset should be represented.</td></tr>
 <tr><td rowspan="2">regionFormat</td><td>"{0} Time"</td><td>"Japan Time"</td></tr>
     <tr><td>"Hora de {0}"</td><td>"Hora de Japón"</td></tr>
 <tr><td rowspan="2">regionFormat type="daylight"<br>(or "standard")</td><td>"{0} Daylight Time"</td><td>"France Daylight Time"</td></tr><tr><td>"horario de verano de {0}"</td><td>"horario de verano de Francia"</td></tr>
@@ -1704,12 +1705,18 @@ Note: A generic location format is constructed by a part of time zone ID represe
 * "UTC-3" (short)
 * "Гринуич+03:30" (long)
 
-Otherwise (when the offset from GMT is zero, referring to GMT itself) the style specified by the `<gmtZeroFormat>` element is used:
+Otherwise, when the offset from GMT is zero, the style specified by the `<gmtZeroFormat>` element is used:
 
 * "GMT"
 * "UTC"
 * "Гринуич"
 
+Otherwise, when the offset from GMT is not known, the style specified by the `<gmtUnknownFormat>` element is used:
+
+* "GMT+?"
+* "UTC+?"
+* "Гринуич+?"
+
 **ISO 8601 time zone formats:** The formats based on the [[ISO 8601](tr35.md#ISO8601)]  local time difference from UTC ("+" sign is used when local time offset is 0), or the UTC indicator ("Z" - only when the local time offset is 0 and the specifier X\* is used). The ISO 8601 basic format does not use a separator character between hours and minutes field, while the extended format uses colon (':') as the separator. The ISO 8601 basic format with hours and minutes fields is equivalent to RFC 822 zone format.
 
 * "-0800" (basic)

docs/site/translation/time-zones-and-city-names.md

@@ -34,6 +34,7 @@ The following special patterns are used in formatting timezones.
 |---|---|---|---|---|
 | gmtFormat | GMT{0}<br /> *or*<br /> GMT{ HOURS_FROM_GMT } | GMT -2:00 | **GMT Pattern.** Modify this field if the format for GMT time uses different letters, such as  HUA+0200  for  GMT+02:00 , or if the letters GMT occur after the time. Make sure you include the  {0} ; that is where the actual time value will go! |  |
 | gmtZeroFormat | GMT | GMT | **GMT Zero Pattern.**  *This field must be consistent with the GMT Pattern.* |  |
+| gmtUnknownFormat | GMT+? | GMT+? | **GMT Unknown Pattern.**  *This field must be consistent with the GMT Pattern.* |  |
 | hourFormat | +HH:mm;-HH:mm | GMT -02:00 | **GMT Hours Pattern.** This field controls the format for the time used with the GMT Pattern. It contains two patterns separated by a ";". The first controls positive time values (and zero), and the second controls the negative values. So to get  *GMT+02.00* for positive values, and  *GMT-02.00* for negative values, you'd use *+HH.mm;-HH.mm*. |  |
 | regionFormat | {0} Time<br /> *or*<br /> { COUNTRY } Time / { CITY } Time | Bolivia Time | **Location-Based Time Zone Pattern.** For generic references to time zones, the country is used if possible, composed with a pattern that in English appears as "{0}  **Time** ". Thus a time zone may appear as "Malaysia  **Time** " or " **Hora de**  Malasia". If the country has multiple time zones, then a city is used to distinguish which one, thus "Argentina (La Rioja)  **Time** ".<br /><br /> Some languages would normally have grammatical adjustments depending on what the name of the city is. For example, one might need "12:43 pm  **Tempo d'** Australia" but "12:43 pm  **Tempo de**   Paris". In that case, there are two approaches:<br /><br /> 1. Use "{0}", which will give results like "12:43 pm Australia" and "12:43 pm Paris", or<br /> 2. Use a "form-style" phrasing such as " **Tempo de:**  {0}", which will give results like "12:43 pm  **Tempo de:**  Australia" and "12:43 pm **Tempo de:**  Paris". |  |
 | regionFormat-standard | {0} Standard Time<br /> *or*<br /> { COUNTRY } Standard Time / { CITY } Standard Time | Bolivia Standard Time |  |   |

tools/cldr-code/src/main/java/org/unicode/cldr/icu/LDMLConstants.java

@@ -91,6 +91,7 @@ public class LDMLConstants {
     public static final String HOURS_FORMAT = "hoursFormat";
     public static final String GMT_FORMAT = "gmtFormat";
     public static final String GMT_ZERO_FORMAT = "gmtZeroFormat";
+    public static final String GMT_UNKNOWN_FORMAT = "gmtUnknownFormat";
     public static final String REGION_FORMAT = "regionFormat";
     public static final String FALLBACK_FORMAT = "fallbackFormat";
     public static final String ABBREVIATION_FALLBACK = "abbreviationFallback";

tools/cldr-code/src/main/java/org/unicode/cldr/test/CheckForCopy.java

@@ -28,7 +28,7 @@ public CheckForCopy(Factory factory) {
                                     + "|intervalFormatItem"
                                     + "|exemplarCharacters\\[@type=\"(currencySymbol|index)\"]"
                                     + "|scientificFormat"
-                                    + "|timeZoneNames/(hourFormat|gmtFormat|gmtZeroFormat)"
+                                    + "|timeZoneNames/(hourFormat|gmtFormat|gmtZeroFormat|gmtUnknownFormat)"
                                     + "|dayPeriod"
                                     + "|(monthWidth|dayWidth|quarterWidth)\\[@type=\"(narrow|abbreviated)\"]"
                                     + "|exemplarCity"

tools/cldr-code/src/main/java/org/unicode/cldr/test/CheckForExemplars.java

@@ -397,11 +397,14 @@ public CheckCLDR handleCheck(
                             result);
                 }
             }
-        } else if (path.contains("/gmtFormat") || path.contains("/gmtZeroFormat")) {
+        } else if (path.contains("/gmtFormat")
+                || path.contains("/gmtZeroFormat")
+                || path.contains("/gmtUnknownFormat")) {
             if (null
                     != (disallowed =
                             containsAllCountingParens(exemplars, exemplarsPlusAscii, value))) {
-                disallowed.removeAll(LETTER); // Allow ASCII A-Z in gmtFormat and gmtZeroFormat
+                disallowed.removeAll(
+                        LETTER); // Allow ASCII A-Z in gmtFormat, gmtZeroFormat, gmtUnknownFormat
                 if (disallowed.size() > 0) {
                     addMissingMessage(
                             disallowed,