^{This page is part of © FOTW Flags Of The World website}

Pages modified on 2005-04

Change month: previous month | next month

(Portuguese yachting flags) 2005-04-29 antónio martins
(Communes of Tomar Municipality (Portugal), obsolete) 2005-04-29 antónio martins
(Portugal - flags of use at sea; obsolete) 2005-04-29 antónio martins
(Portuguese political flags — obsolete!) 2005-04-29 antónio martins
(Olivença irredentists, Portugal - obsolete page) 2005-04-29 jorge candeias
(Portuguese municipal flags - obsolete page) 2005-04-29 antónio martins
(Madeira, Portugal -- obsolete) 2005-04-29 antónio martins
(Portugal - miscelaneous flags) 2005-04-29 antónio martins
(House flags of Portuguese shipping companies) 2005-04-29 antónio martins
(Portugal - district flags, obsolete pages) 2005-04-29 antónio martins
(Santarém district, Portugal - obsolete page) 2005-04-29 antónio martins
(Flags of portuguese colonial officials) 2005-04-29 antónio martins
(Flags of portuguese clubs - obsolete) 2005-04-29 antónio martins
(Commune flags, Portugal - obsolete page) 2005-04-29 antónio martins
(Portuguese Colonial Companies -- obsolete) 2005-04-29 antónio martins
(Portugal - colonial flags) 2005-04-29 antónio martins
(Christ Knightsʼ Order naval flags, Portugal -- obsolete) 2005-04-29 antónio martins
(Portugal - 1830 historical flags; obsolete) 2005-04-29 antónio martins
(Portuguese Municipal flags: obsolete) 2005-04-29 antónio martins
Portugal (1580-1640) 2005-04-29 antónio martins
(Commune flags, Portugal - obsolete page) 2005-04-29 antónio martins
(Thirty-three Orientals flag (Uruguay: 18xx): Obsolete page) 2005-04-29 antónio martins
(Flag of the Federal League, a.k.a. Artigaʼs flag (Eastern Bank of La Plata: Uruguay and northe 2005-04-29 antónio martins
(Independentist flags in La Plata region (Argentina, Uruguay and Paraguay: 1810-1840): Obsolete page 2005-04-29 antónio martins
(Belgranoʼs historical flags (La Plata: northern Argentina, 1813-1815): Obsolete page) 2005-04-29 antónio martins
(Clickable map of French Polynesia: Obsolete page!) 2005-04-29 antónio martins
(Flag of Guacaray + Otorgués (Uruguay and Argentina: ca. 1815): Obsolete page) 2005-04-29 antónio martins
(Portugal - Flag hoisted by the Adamastor (1910) 2005-04-29 antónio martins
(International Banner of Peace: Obsolete page!) 2005-04-29 antónio martins
(Pacifism: Obsolete page!) 2005-04-29 antónio martins
(Governmental and Military Flags of Peru: Obsolete page!) 2005-04-29 antónio martins
(Lima, Peru: obsolete) 2005-04-29 antónio martins
de}Lifestream unity flag : Obsolete page!) 2005-04-29 antónio martins
(Peace Sign Flag / Campaign for Nuclear Disarmment: Obsolete page!) 2005-04-29 antónio martins
(Bolivia within the Peruvian-Bolivian Confederation (1838-1839) (obsolete!) 2005-04-29 antónio martins
(Peruvian-Bolivian Confederation (1838-1839) (obsolete!) 2005-04-29 antónio martins
(South Peru within the Peruvian-Bolivian Confederation (1838-1839) (obsolete!) 2005-04-29 antónio martins
(North Peru within the Peruvian-Bolivian Confederation (1838-1839) (obsolete!) 2005-04-29 antónio martins
Numansdorp (The Netherlands) 2005-04-29 jarig bakker
Ouderkerk a/d IJssel (The Netherlands) 2005-04-29 jarig bakker
(Obsolete page! — Organization of African Unity (OAU) 2005-04-29 antónio martins
(International Olympic Committee: Obsolete page!) 2005-04-29 antónio martins
(Obsolete page! — Organization of African Unity (OAU) 2005-04-29 antónio martins
Eygelshoven (The Netherlands) 2005-04-29 jarig bakker
Hulsberg (The Netherlands) 2005-04-29 jarig bakker
(Querétaro state, Mexico: obsolete page!) 2005-04-29 antónio martins
Angers (Municipality, Maine-et-Loire, France) 2005-04-29 ivan sache
Counties (Germany) 2005-04-29 santiago dotor
Municipality of Schönberg (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Reichertsheim (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Zangberg (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Rattenkirchen (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Unterreit (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Oberallgäu County (Schwaben District, Bavaria, Germany) 2005-04-29 santiago dotor
Market-Town of Kraiburg a. Inn (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Market-Town of Gars (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Market-Town of Oberstdorf (Oberallgäu County, Schwaben District, Bavaria, Germany) 2005-04-29 santiago dotor
Mühldorf County (Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Egglkofen (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Schwalm-Eder County (Hesse, Germany) 2005-04-29 santiago dotor
Municipality of Schwindegg (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Municipality of Niedertaufkirchen (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Schwaben District (Bavaria, Germany) 2005-04-29 santiago dotor
Waldeck-Frankenberg County (Hesse, Germany) 2005-04-29 santiago dotor
Municipality of Waldkraiburg (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-29 santiago dotor
Main-Kinzig County (Hesse, Germany) 2005-04-29 santiago dotor
Saint-Georges-sur-Meuse (Municipality, Province of Liège, Belgium) 2005-04-29 ivan sache
Manta (Cundinamarca, Colombia) 2005-04-29 dov gutterman
San Antonio del Tequendama (Cundinamarca, Colombia) 2005-04-29 dov gutterman
Luninets District (Brest, Belarus) 2005-04-29 dov gutterman
Concordia (Antioquia, Colombia) 2005-04-29 dov gutterman
Cachipay (Cundinamarca, Colombia) 2005-04-29 dov gutterman
Uruguayan anarchist flags 2005-04-23 francisco gregoric
San Francisco Gotera (Morazan, El Salvador) 2005-04-23 dov gutterman
Philippines: President and Vice President 2005-04-23 rob raeside
Yerseke (The Netherlands) 2005-04-23 jarig bakker
Horssen (The Netherlands) 2005-04-23 jarig bakker
Zevenhoven (The Netherlands) 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [l] 2005-04-23 jarig bakker
Royal Netherlands Naval College (The Netherlands) 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [j] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [h] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [m] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [t] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [c] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [b] 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [a] 2005-04-23 jarig bakker
Nautilus rowing club (The Netherlands) 2005-04-23 jarig bakker
Motorboat Club (The Netherlands) 2005-04-23 jarig bakker
BRU, Bruinisse (The Netherlands) 2005-04-23 jarig bakker
Yachting clubs (The Netherlands) [g] 2005-04-23 jarig bakker
Mexico - Imaginary States: Republic of Sonora 2005-04-23 juan manuel gabino villascán
Mexico - Filibustering: William Walker 2005-04-23 juan manuel gabino villascán
Sonora, Mexico 2005-04-23 juan manuel gabino villascán
Italy - Trade Unions Flags - PART II 2005-04-23 dov gutterman
UIL - Italian Workers Union 2005-04-23 dov gutterman
Lukac (Virovitica-Podravina, Croatia) 2005-04-23 dov gutterman
Croatia - Other Proposals and Unofficial Variations 2005-04-23 dov gutterman
Alsatian People's Union (Political movement, Alsace, France) 2005-04-23 ivan sache
La Chapelle-sur-Erdre (Municipality, Loire-Atlantique, France) 2005-04-23 ivan sache
Collonges-les-Premières (Municipality, Côte-d'Or, France) 2005-04-23 ivan sache
Vélizy-Villacoublay (Municipality, Yvelines, France) 2005-04-23 ivan sache
Aude (Department, France): Yacht clubs 2005-04-23 ivan sache
Granville (Municipality, Manche, France) 2005-04-23 ivan sache
Caracoli (Antioquia, Colombia) 2005-04-23 dov gutterman
Bello (Antioquia, Colombia) 2005-04-23 dov gutterman
Betulia (Antioquia, Colombia) 2005-04-23 dov gutterman
Andes (Antioquia, Colombia) 2005-04-23 dov gutterman
Anori (Antioquia, Colombia) 2005-04-23 dov gutterman
Buritica (Antioquia, Colombia) 2005-04-23 dov gutterman
Caicedo (Antioquia, Colombia) 2005-04-23 dov gutterman
Caldas (Antioquia, Colombia) 2005-04-23 dov gutterman
Carepa (Antioquia, Colombia) 2005-04-23 dov gutterman
Caramanta (Antioquia, Colombia) 2005-04-23 dov gutterman
Luninets (Brest, Belarus) 2005-04-23 dov gutterman
Mikashevici (Brest, Belarus) 2005-04-23 dov gutterman
Belarus - Subdivisions and Minorities Flags 2005-04-23 dov gutterman
Drogobych (Lviv, Ukraine) 2005-04-16 dov gutterman
Kolomiya (Ivano-Frankivs'k, Ukraine) 2005-04-16 dov gutterman
Kalush (Ivano-Frankivs'k, Ukraine) 2005-04-16 dov gutterman
Lubny (Poltava, Ukraine) 2005-04-16 dov gutterman
Dreumel (The Netherlands) 2005-04-16 jarig bakker
Oudega (The Netherlands) 2005-04-16 jarig bakker
(Spanish Morocco: obsolete page!) 2005-04-16 antónio martins
(Durango (Mexico): obsolete page) 2005-04-16 antónio martins
Saint Lucia - Colonial Flags 2005-04-16 dov gutterman
Bolzano Province (Trentino-Alto Adige, Italy) 2005-04-16 dov gutterman
CGIL - Italian General Confederation of Labour - Federations Flags 2005-04-16 dov gutterman
Trieste (Friuli-Venezia Giulia, Italy) 2005-04-16 dov gutterman
CGIL - Italian General Confederation of Labour - Italian Textile Industry and Similar Workers Fed. 2005-04-16 dov gutterman
CGIL - Italian General Confederation of Labour 2005-04-16 dov gutterman
Merano (Trentino-Alto Adige, Italy) 2005-04-16 dov gutterman
(Lega Ambiente, Italy: Obsolete page!) 2005-04-16 antónio martins
(House flags of japanese shipping companies: Obsolete page!) 2005-04-16 antónio martins
(The Socialist Rose, obsolete) 2005-04-16 antónio martins
Antigua and Barbuda - Colonial Flags (1956-1967) 2005-04-16 dov gutterman
Bolivar (Barinas, Venezuela) 2005-04-09 dov gutterman
Midway Islands (U.S. Minor Outlying Islands) 2005-04-09 sam lockton
Zhuravno (Lviv, Ukraine) 2005-04-09 dov gutterman
Oosterbierum (The Netherlands) 2005-04-09 jarig bakker
Beesd (The Netherlands) 2005-04-09 jarig bakker
Jack (Malta) 2005-04-09 santiago dotor
Village of Gudja (Malta) 2005-04-09 santiago dotor
Unofficial Civil Ensign c.1898-1943, probably never existed (Malta) 2005-04-09 santiago dotor
State Ensign 1875-c.1898 (Malta) 2005-04-09 santiago dotor
Ensign 19th Century (Malta) 2005-04-09 santiago dotor
State Ensign c.1898-1923 (Malta) 2005-04-09 santiago dotor
Historical Flags (Malta) 2005-04-09 santiago dotor
Unofficial Civil Flag until 1943 (Malta) 2005-04-09 santiago dotor
Queen Elizabeth II's Personal Flag for Malta 1967-1974 (Malta) 2005-04-09 santiago dotor
State Ensign 1943-1964 (Malta) 2005-04-09 santiago dotor
Brigadier Commanding the British Troops (Malta) 2005-04-09 santiago dotor
Governor's Flag 1943-1964 (Malta) 2005-04-09 santiago dotor
State Ensign 1923-1943 (Malta) 2005-04-09 santiago dotor
Governor's Flag 1875-c.1898 (Malta) 2005-04-09 santiago dotor
Order of Saint Stephen (Tuscany, Italy) 2005-04-09 santiago dotor
Governor-General's Flag 1964-1974 (Malta) 2005-04-09 santiago dotor
Governor's Flag c.1898-1943 (Malta) 2005-04-09 santiago dotor
The George Cross (Malta) 2005-04-09 santiago dotor
CGIL - Italian General Confederation of Labour - Italian Transport Workers Federation 2005-04-09 dov gutterman
CGIL - Italian General Confederation of Labour - Metallurgical Employees and Workers Federation 2005-04-09 dov gutterman
French Guiana (France, Overseas Department and Region) 2005-04-09 ivan sache
CISL - Confederation of Italian Workers' Trade Unions 2005-04-09 dov gutterman
Saint-Cloud (Municipality, Hauts-de-Seine, France) 2005-04-09 ivan sache
Paris (Department and Municipality, France): Yacht clubs and rowing clubs 2005-04-09 ivan sache
Charente-Maritime (Department, France): Yacht clubs 2005-04-09 ivan sache
Arcachon (Municipality, Gironde, France) 2005-04-09 ivan sache
Val-de-Marne (Department, France): Yacht clubs 2005-04-09 ivan sache
Pyrénées-Orientales (Department, France): Yacht clubs 2005-04-09 ivan sache
Société Anonyme des Armateurs Nantais (Shipping company, France) 2005-04-09 ivan sache
Compagnie des Vapeurs de Charge Français (Shipping company, France) 2005-04-09 ivan sache
Postel & Fils (Shipping company, France) 2005-04-09 ivan sache
Antibes-Juan-les-Pins (Municipality, Alpes-Maritimes, France) 2005-04-09 ivan sache
Chevillotte Frères (Shipping company, France) 2005-04-09 ivan sache
Compagnie Havraise de Navigation (Shipping company, France) 2005-04-09 ivan sache
Daher (Shipping company, France) 2005-04-09 ivan sache
Armement Nord-Africain Cherfils (Shipping company, France) 2005-04-09 ivan sache
Compagnie Havraise Péninsulaire de Navigation (Shipping company, France) 2005-04-09 ivan sache
Yacht Club de France 2005-04-09 ivan sache
Pastré Frères (Shipping company, France) 2005-04-09 ivan sache
Compagnie Française de l'Afrique Occidentale (Shipping company, France) 2005-04-09 ivan sache
France: Modern monarchist flags 2005-04-09 ivan sache
Compagnie de Navigation d'Orbigny (Shipping company, France) 2005-04-09 ivan sache
France: Name pennants 2005-04-09 ivan sache
Société Les Affrêteurs Réunis (Shipping company, France) 2005-04-09 ivan sache
(Esperanto flag (obsolete!) 2005-04-09 antónio martins
Municipality of Erharting (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-09 santiago dotor
Municipality of Maitenbeth (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-09 santiago dotor
Municipality of Lohkirchen (Mühldorf County, Oberbayern District, Bavaria, Germany) 2005-04-09 santiago dotor
(Environmentalism: Obsolete page!) 2005-04-09 antónio martins
(Greenpeace: Obsolete page!) 2005-04-09 antónio martins
Flag of the War Minister and Commander-in-Chief of the Armed Forces 1935-1938 (Germany) 2005-04-09 santiago dotor
German-Occupied Territories 1939-1945 2005-04-09 santiago dotor
Flag of the Chief of the High Command of the Armed Forces 1938-1941 (Germany) 2005-04-09 santiago dotor
Standard of the Leader and National Chancellor 1935-1945 (Third Reich, Germany) 2005-04-09 santiago dotor
City of Heidelberg (Baden-Württemberg, Germany) 2005-04-09 santiago dotor
Garmisch-Partenkirchen County (Oberbayern District, Bavaria, Germany) 2005-04-09 santiago dotor
Command Flag for Armed Forces Commanders c.1940-1945 (Germany) 2005-04-09 santiago dotor
Olympic Flags (Germany) 2005-04-09 santiago dotor
Flag of a Field Marshal as Chief of the High Command of the Armed Forces 1941-1945 (Germany) 2005-04-09 santiago dotor
Flag of the War Minister 23rd June-5th October 1935 (Germany) 2005-04-09 santiago dotor
Flag of the Defense Minister 1933-1935 (Germany) 2005-04-09 santiago dotor
Breisgau-Hochschwarzwald County (Freiburg District, Baden-Württemberg, Germany) 2005-04-09 santiago dotor
(Northern Cyprus, obsolete) 2005-04-09 antónio martins
(Cape Verde flag of 1975-1992: Obsolete page) 2005-04-09 antónio martins
Cota (Cundinamarca, Colombia) 2005-04-09 dov gutterman
Acevedo (Huila, Colombia) 2005-04-09 dov gutterman
(Chilean presidential flag: Obsolete page!) 2005-04-09 antónio martins
(La Guajira, Colombia: obsolete) 2005-04-09 antónio martins
(Mapuche people, Chile and Argentina: Obsolete page!) 2005-04-09 antónio martins
(Chilean Army rank flags, obsolete) 2005-04-09 antónio martins
(Clickable map of Hochdorf district (Luzern Canton, Switzerland) obsolete!) 2005-04-09 antónio martins
(Clickable map of Waldendurg district (Basel Land half Canton, Switzerland) obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [zja] to [zzz]), obsolete!) 2005-04-09 antónio martins
Bibliography (codes [hee] to [hiz]) 2005-04-09 antónio martins
(Bibliography (codes [taa] to [tzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [vaa] to [vzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [haa] to [hzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [naa] to [nzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [prk] to [pzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [iaa] to [izz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [raa] to [rzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [saa] to [snz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [saa] to [szz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [paa] to [pzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [pia] to [pzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [waa] to [wzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [jaa] to [jzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [qaa] to [qzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [ped] to [phz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [maa] to [mzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [soa] to [szz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [kaa] to [kzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [paa] to [phz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [oaa] to [ozz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [laa] to [lzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [uaa] to [uzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [eaa] to [ezz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [faa] to [fzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [baa] to [bzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [gaa] to [gzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [aaa] to [zzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [aaa] to [azz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [cra] to [czz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [daa] to [dzz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [caa] to [czz]), obsolete!) 2005-04-09 antónio martins
(Bibliography (codes [caa] to [cqz]), obsolete!) 2005-04-09 antónio martins
South Africa - national index 2005-04-08 bruce berry
Hoek van Holland (The Netherlands) 2005-04-02 jarig bakker
Mexico - Nazi and Neonazi movements: Creole Pride 2005-04-02 juan manuel gabino villascán
Mexico - Partido Acción Nacional 2005-04-02 juan manuel gabino villascán
Mexico - Frente Zapatista de Liberción Nacional 2005-04-02 juan manuel gabino villascán
Mexico - Ejército Popular Revolucionario 2005-04-02 juan manuel gabino villascán
Mexico - Partido Verde Ecologista de México 2005-04-02 juan manuel gabino villascán
@Obsolete page 2005-04-02 juan manuel gabino villascán
Mexico - Ejército Zapatista de Liberción Nacional 2005-04-02 juan manuel gabino villascán
Mexico - Mexica Movement 2005-04-02 juan manuel gabino villascán
@Obsolete page 2005-04-02 juan manuel gabino villascán
CGIL - Italian General Confederation of Labour - Italian Pensioner Trade Union 2005-04-02 dov gutterman
USI - Union of Italian Trade Unions 2005-04-02 dov gutterman
@France: Registration flags for merchant ships (1814-1929) 2005-04-02 ivan sache
Charente (Department, France): Yacht clubs and rowing clubs 2005-04-02 ivan sache
Thônes (Municipality, Haute-Savoie, France) 2005-04-02 ivan sache
France: Fifth Republic (1959-) 2005-04-02 ivan sache
@Free French Forces (1940-1944) 2005-04-02 ivan sache
Colombey-les-Deux-Eglises (Municipality, Haute-Marne, France) 2005-04-02 ivan sache
Haute-Savoie (Department, France): Yacht clubs and rowing clubs 2005-04-02 ivan sache
Free French Naval Forces (1940-1944) 2005-04-02 ivan sache
Haute-Vienne (Department, France): Yacht clubs and rowing clubs 2005-04-02 ivan sache
Free France (1940-1944) 2005-04-02 ivan sache
France: Anti-German Resistance(1940-1944) 2005-04-02 ivan sache
France: Historical chronology since 1792 2005-04-02 ivan sache
Subdivisions of Chubut province (Argentina) 2005-04-02 antónio martins
Ginástica y Esgrima de La Plata club (Argentina) 2005-04-02 antónio martins
Estudiantes de la Plata club (Argentina) 2005-04-02 antónio martins
Subdivisions of Tierra del Fuego province (Argentina) 2005-04-02 antónio martins
Argentine National Emblems 2005-04-02 antónio martins
Subdivisions of Río Negro province (Argentina) 2005-04-02 antónio martins

Change month: previous month | next month