BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Califa//Califa Calendar//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Califa — Astronomers 2026
X-WR-CALDESC:Sky watchers who mapped the cosmos and measured humanity's pla
 ce within it.
BEGIN:VEVENT
UID:astronomers-ast-hevelius-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260128
DTEND;VALUE=DATE:20260129
SUMMARY:Johannes Hevelius — birth
DESCRIPTION:Gdańsk astronomer who mapped the Moon and named constellations
 . Source: https://en.wikipedia.org/wiki/Johannes_Hevelius
URL:https://en.wikipedia.org/wiki/Johannes_Hevelius
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-tombaugh-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260204
DTEND;VALUE=DATE:20260205
SUMMARY:Clyde Tombaugh — birth
DESCRIPTION:Farmer-astronomer who discovered Pluto. Source: https://en.wiki
 pedia.org/wiki/Clyde_Tombaugh
URL:https://en.wikipedia.org/wiki/Clyde_Tombaugh
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-zwicky-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260214
DTEND;VALUE=DATE:20260215
SUMMARY:Fritz Zwicky — birth
DESCRIPTION:Astrophysicist who inferred dark matter and neutron stars. Sour
 ce: https://en.wikipedia.org/wiki/Fritz_Zwicky
URL:https://en.wikipedia.org/wiki/Fritz_Zwicky
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-copernicus-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260219
DTEND;VALUE=DATE:20260220
SUMMARY:Nicolaus Copernicus — birth
DESCRIPTION:Canon who placed the Sun at the planetary system's centre. Sour
 ce: https://en.wikipedia.org/wiki/Nicolaus_Copernicus
URL:https://en.wikipedia.org/wiki/Nicolaus_Copernicus
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-fraunhofer-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260306
DTEND;VALUE=DATE:20260307
SUMMARY:Joseph von Fraunhofer — birth
DESCRIPTION:Optician who mapped the Sun's absorption lines. Source: https:/
 /en.wikipedia.org/wiki/Joseph_von_Fraunhofer
URL:https://en.wikipedia.org/wiki/Joseph_von_Fraunhofer
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-john-herschel-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260307
DTEND;VALUE=DATE:20260308
SUMMARY:John Herschel — birth
DESCRIPTION:Astronomer who catalogued southern nebulae and pioneered photog
 raphy. Source: https://en.wikipedia.org/wiki/John_Herschel
URL:https://en.wikipedia.org/wiki/John_Herschel
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-le-verrier-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260311
DTEND;VALUE=DATE:20260312
SUMMARY:Urbain Le Verrier — birth
DESCRIPTION:Mathematician who predicted Neptune from orbital perturbations.
  Source: https://en.wikipedia.org/wiki/Urbain_Le_Verrier
URL:https://en.wikipedia.org/wiki/Urbain_Le_Verrier
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-galileo-telescope-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260313
DTEND;VALUE=DATE:20260314
SUMMARY:Sidereus Nuncius — work
DESCRIPTION:Galileo's pamphlet announcing Jupiter's moons and lunar mountai
 ns. Source: https://en.wikipedia.org/wiki/Sidereus_Nuncius
URL:https://en.wikipedia.org/wiki/Sidereus_Nuncius
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-huygens-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260414
DTEND;VALUE=DATE:20260415
SUMMARY:Christiaan Huygens — birth
DESCRIPTION:Physicist who discovered Titan and explained Saturn's rings. So
 urce: https://en.wikipedia.org/wiki/Christiaan_Huygens
URL:https://en.wikipedia.org/wiki/Christiaan_Huygens
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-oort-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260428
DTEND;VALUE=DATE:20260429
SUMMARY:Jan Oort — birth
DESCRIPTION:Dutch astronomer who mapped galactic rotation and the comet clo
 ud. Source: https://en.wikipedia.org/wiki/Jan_Oort
URL:https://en.wikipedia.org/wiki/Jan_Oort
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-payne-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260510
DTEND;VALUE=DATE:20260511
SUMMARY:Cecilia Payne-Gaposchkin — birth
DESCRIPTION:Astronomer who showed stars are mostly hydrogen. Source: https:
 //en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin
URL:https://en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-williamina-fleming-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260515
DTEND;VALUE=DATE:20260516
SUMMARY:Williamina Fleming — birth
DESCRIPTION:Harvard computer who catalogued thousands of stars. Source: htt
 ps://en.wikipedia.org/wiki/Williamina_Fleming
URL:https://en.wikipedia.org/wiki/Williamina_Fleming
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-cassini-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260608
DTEND;VALUE=DATE:20260609
SUMMARY:Giovanni Domenico Cassini — birth
DESCRIPTION:Observer who discovered the gap in Saturn's rings. Source: http
 s://en.wikipedia.org/wiki/Giovanni_Domenico_Cassini
URL:https://en.wikipedia.org/wiki/Giovanni_Domenico_Cassini
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-hoyle-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260624
DTEND;VALUE=DATE:20260625
SUMMARY:Fred Hoyle — birth
DESCRIPTION:Cosmologist who named the Big Bang and seeded nucleosynthesis. 
 Source: https://en.wikipedia.org/wiki/Fred_Hoyle
URL:https://en.wikipedia.org/wiki/Fred_Hoyle
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-messier-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260626
DTEND;VALUE=DATE:20260627
SUMMARY:Charles Messier — birth
DESCRIPTION:Comet hunter whose catalogue listed galaxies and nebulae. Sourc
 e: https://en.wikipedia.org/wiki/Charles_Messier
URL:https://en.wikipedia.org/wiki/Charles_Messier
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-secchi-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260628
DTEND;VALUE=DATE:20260629
SUMMARY:Angelo Secchi — birth
DESCRIPTION:Jesuit astronomer who classified stars by their spectra. Source
 : https://en.wikipedia.org/wiki/Angelo_Secchi
URL:https://en.wikipedia.org/wiki/Angelo_Secchi
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-leavitt-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260704
DTEND;VALUE=DATE:20260705
SUMMARY:Henrietta Swan Leavitt — birth
DESCRIPTION:Discovered the relation that measures cosmic distances. Source:
  https://en.wikipedia.org/wiki/Henrietta_Swan_Leavitt
URL:https://en.wikipedia.org/wiki/Henrietta_Swan_Leavitt
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-bell-burnell-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260715
DTEND;VALUE=DATE:20260716
SUMMARY:Jocelyn Bell Burnell — birth
DESCRIPTION:Graduate student who discovered pulsars. Source: https://en.wik
 ipedia.org/wiki/Jocelyn_Bell_Burnell
URL:https://en.wikipedia.org/wiki/Jocelyn_Bell_Burnell
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-bessel-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260722
DTEND;VALUE=DATE:20260723
SUMMARY:Friedrich Bessel — birth
DESCRIPTION:Astronomer who first measured a star's parallax. Source: https:
 //en.wikipedia.org/wiki/Friedrich_Bessel
URL:https://en.wikipedia.org/wiki/Friedrich_Bessel
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-rubin-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260723
DTEND;VALUE=DATE:20260724
SUMMARY:Vera Rubin — birth
DESCRIPTION:Observer whose galaxy rotations revealed dark matter. Source: h
 ttps://en.wikipedia.org/wiki/Vera_Rubin
URL:https://en.wikipedia.org/wiki/Vera_Rubin
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-maria-mitchell-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260801
DTEND;VALUE=DATE:20260802
SUMMARY:Maria Mitchell — birth
DESCRIPTION:First American woman to discover a comet. Source: https://en.wi
 kipedia.org/wiki/Maria_Mitchell
URL:https://en.wikipedia.org/wiki/Maria_Mitchell
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-flamsteed-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260819
DTEND;VALUE=DATE:20260820
SUMMARY:John Flamsteed — birth
DESCRIPTION:First Astronomer Royal and compiler of a landmark star catalogu
 e. Source: https://en.wikipedia.org/wiki/John_Flamsteed
URL:https://en.wikipedia.org/wiki/John_Flamsteed
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-romer-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260925
DTEND;VALUE=DATE:20260926
SUMMARY:Ole Rømer — birth
DESCRIPTION:Danish astronomer who first measured the speed of light. Source
 : https://en.wikipedia.org/wiki/Ole_R%C3%B8mer
URL:https://en.wikipedia.org/wiki/Ole_R%C3%B8mer
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-chandrasekhar-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261019
DTEND;VALUE=DATE:20261020
SUMMARY:Subrahmanyan Chandrasekhar — birth
DESCRIPTION:Theorist who calculated the mass limit of white dwarfs. Source:
  https://en.wikipedia.org/wiki/Subrahmanyan_Chandrasekhar
URL:https://en.wikipedia.org/wiki/Subrahmanyan_Chandrasekhar
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-shapley-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261102
DTEND;VALUE=DATE:20261103
SUMMARY:Harlow Shapley — birth
DESCRIPTION:Astronomer who located the Sun far from the galaxy's centre. So
 urce: https://en.wikipedia.org/wiki/Harlow_Shapley
URL:https://en.wikipedia.org/wiki/Harlow_Shapley
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-halley-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261108
DTEND;VALUE=DATE:20261109
SUMMARY:Edmond Halley — birth
DESCRIPTION:Astronomer who predicted his comet's return. Source: https://en
 .wikipedia.org/wiki/Edmond_Halley
URL:https://en.wikipedia.org/wiki/Edmond_Halley
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-sagan-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261109
DTEND;VALUE=DATE:20261110
SUMMARY:Carl Sagan — birth
DESCRIPTION:Planetary scientist who popularized cosmic science. Source: htt
 ps://en.wikipedia.org/wiki/Carl_Sagan
URL:https://en.wikipedia.org/wiki/Carl_Sagan
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-william-herschel-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261115
DTEND;VALUE=DATE:20261116
SUMMARY:William Herschel — birth
DESCRIPTION:Musician-turned-astronomer who discovered Uranus. Source: https
 ://en.wikipedia.org/wiki/William_Herschel
URL:https://en.wikipedia.org/wiki/William_Herschel
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-kuiper-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261207
DTEND;VALUE=DATE:20261208
SUMMARY:Gerard Kuiper — birth
DESCRIPTION:Planetary scientist who discovered moons and predicted comet be
 lts. Source: https://en.wikipedia.org/wiki/Gerard_Kuiper
URL:https://en.wikipedia.org/wiki/Gerard_Kuiper
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-cannon-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261211
DTEND;VALUE=DATE:20261212
SUMMARY:Annie Jump Cannon — birth
DESCRIPTION:Harvard astronomer whose spectral classes became standard. Sour
 ce: https://en.wikipedia.org/wiki/Annie_Jump_Cannon
URL:https://en.wikipedia.org/wiki/Annie_Jump_Cannon
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-tycho-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261214
DTEND;VALUE=DATE:20261215
SUMMARY:Tycho Brahe — birth
DESCRIPTION:Danish nobleman whose precise observations enabled Kepler's law
 s. Source: https://en.wikipedia.org/wiki/Tycho_Brahe
URL:https://en.wikipedia.org/wiki/Tycho_Brahe
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-ast-kepler-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20261227
DTEND;VALUE=DATE:20261228
SUMMARY:Johannes Kepler — birth
DESCRIPTION:Mathematician who found the elliptical laws of planetary motion
 . Source: https://en.wikipedia.org/wiki/Johannes_Kepler
URL:https://en.wikipedia.org/wiki/Johannes_Kepler
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:astronomers-rail-2026@califa.60r.tech
DTSTAMP:20261106T111955Z
DTSTART;VALUE=DATE:20260101
DTEND;VALUE=DATE:20270101
SUMMARY:Astronomers — year rail (6 entries)
DESCRIPTION:Year-precision entries are kept off the day grid. See the Calif
 a theme page.
TRANSP:TRANSPARENT
END:VEVENT
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