Hour (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hour" in English language version.

Last modified: 00:25:01, 27 July 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

3728web.archive.org

1^st place

159doi.org

2^nd place

139books.google.com

3^rd place

115oup.com

292^nd place

233^rd place

107archive.org

6^th place

88pyramidtextsonline.com

low place

32academia.edu

105^th place

99^th place

31umich.edu

429^th place

307^th place

22bipm.org

1,781^st place

2,481^st place

22scientificamerican.com

1,110^th place

817^th place

22adsabs.harvard.edu

14^th place

9^th place

22uchicago.edu

226^th place

199^th place

11tufts.edu

192^nd place

165^th place

11lsj.gr

low place

11nist.gov

708^th place

742^nd place

11en.wikisource.org

82^nd place

41^st place

11semanticscholar.org

15^th place

8^th place

11vatican.va

184^th place

336^th place

11nus.edu.sg

2,453^rd place

1,629^th place

11aramcoworld.com

low place

8,827^th place

11uc.pt

5,894^th place

9,117^th place

11royin.go.th

low place

11soc.go.th

335^th place

2,113^th place

academia.edu (Global: 105^th place; English: 99^th place)

Petersen (1992), p. 129. Petersen, Jens Østergård (1992). "The Taiping Jing and the A.D. 102 clepsydra reform". Acta Orientalia. 53. Copenhagen, DK: 122–158. Archived from the original on 2022-01-11. Retrieved 2017-12-19.
Petersen (1992), p. 125. Petersen, Jens Østergård (1992). "The Taiping Jing and the A.D. 102 clepsydra reform". Acta Orientalia. 53. Copenhagen, DK: 122–158. Archived from the original on 2022-01-11. Retrieved 2017-12-19.

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Correll, Malcolm (November 1977). "Early Time Measurements". The Physics Teacher. 15 (8): 476–479. Bibcode:1977PhTea..15..476C. doi:10.1119/1.2339739.
F. Richard Stephenson; Louay J. Fatoohi (May 1994). "The Babylonian Unit of Time". Journal for the History of Astronomy. 25 (2): 99–110. Bibcode:1994JHA....25...99S. doi:10.1177/002182869402500203. S2CID 117951139.

aramcoworld.com (Global: low place; English: 8,827^th place)

archive.aramcoworld.com

"Saudi Aramco World : Dinner At When?". archive.aramcoworld.com. Archived from the original on 2016-09-28. Retrieved 2018-08-09.

archive.org (Global: 6^th place; English: 6^th place)

Morris, Richard, ed. (1872), "Old Kentish Sermons (Laud MS 471)", An Old English Miscellany, London: N. Trübner & Co. for the Early English Text Society, p. 34
Holford-Strevens (2005). Holford-Strevens, Leofranc (2005). The History of Time: A Very Short Introduction. Very Short Introductions. Vol. 133. Oxford, UK: Oxford University Press. ISBN 9780192804990.
Clagett (1995), p. 49 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 50 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 50–1 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 218 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Srinivasan, Saradha (1979). Mensuration in Ancient India. Delhi, India: Ajanta Publications. pp. 119–122.

bipm.org (Global: 1,781^st place; English: 2,481^st place)

"Resolution 7", Resolutions of the CGPM: 9th Meeting, Paris: International Bureau of Weights and Measures, October 1948
"SI-Brochure-9". BIPM (4.01 ed.). June 2026. pp. 140–141. doi:10.59161/AUEZ1291. Retrieved 2026-06-08.

books.google.com (Global: 3^rd place; English: 3^rd place)

Evans, James (1998). The History and Practice of Ancient Astronomy. Oxford University Press. p. 95. ISBN 978-0-19-509539-5 – via Google Books.
Liddell, Henry George; Scott, Robert (1883) [1883]. A Lexicon Abridged from Liddell & Scott's Greek-English Lexicon (20 ed.). Harper & Brothers. p. 469. Retrieved 12 April 2021. [...] from Homer downwards, the Greeks divided the night into three watches.
Al-Biruni (1879) [1000]. The Chronology of Ancient Nations. Translated by Sachau, C. Edward. pp. 147–149.
Clagett (1995), p. 49 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 50 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 50–1 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Clagett (1995), p. 218 Clagett, Marshall (1995). "Volume II: Calendars, clocks, and astronomy". Ancient Egyptian Science. Memoirs of the APS. Vol. 214. Philadelphia, PA: American Philosophical Society. ISBN 9780871692146.
Sewell (1924), p. xii. Sewell, Robert (1924). The Siddhantas and the Indian Calendar. Kolkata, IN: Government of India Central Publication Branch. ISBN 9788120603646. {{cite book}}: ISBN / Date incompatibility (help)
Dershowitz & al. (2008), p. 207 Dershowitz, Nachum; Edward M. Reingold (2008). Calendrical Calculations. Cambridge, UK: Cambridge University Press. ISBN 9780521885409.

doi.org (Global: 2^nd place; English: 2^nd place)

Correll, Malcolm (November 1977). "Early Time Measurements". The Physics Teacher. 15 (8): 476–479. Bibcode:1977PhTea..15..476C. doi:10.1119/1.2339739.
F. Richard Stephenson; Louay J. Fatoohi (May 1994). "The Babylonian Unit of Time". Journal for the History of Astronomy. 25 (2): 99–110. Bibcode:1994JHA....25...99S. doi:10.1177/002182869402500203. S2CID 117951139.
"SI-Brochure-9". BIPM (4.01 ed.). June 2026. pp. 140–141. doi:10.59161/AUEZ1291. Retrieved 2026-06-08.
Sōma & al. (2004), p. 887. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 889. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 888. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 904. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 896. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Canhão, Telo Ferreira (2013). "A Timeless Legacy: the Calendars of Ancient Egypt". Alexandrea ad Aegyptvm: The legacy of multiculturalismo in antiquity. Porto: Edições Afrontamento. pp. 283–301. doi:10.14195/978-989-26-0966-9_20. ISBN 9789892609669. Archived from the original on 2019-01-26. Retrieved 2019-01-25.

en.wikisource.org (Global: 82^nd place; English: 41^st place)

This article incorporates text from a publication now in the public domain: Cabrol, Fernand (1911). "Matins". In Herbermann, Charles (ed.). Catholic Encyclopedia. Vol. 10. New York: Robert Appleton Company.

lsj.gr (Global: low place; English: low place)

Liddell, Henry George; Scott, Robert; Jones, Henry Stuart. "ὥρα". A Greek-English Lexicon. Α.ΙΙ.2. Archived from the original on 2021-07-20. Retrieved 2021-07-20.

nist.gov (Global: 708^th place; English: 742^nd place)

"Early Clocks". A Walk Through Time. National Institute of Standards and Technology. 12 August 2009. Archived from the original on 2 August 2016. Retrieved 13 October 2022.

nus.edu.sg (Global: 2,453^rd place; English: 1,629^th place)

math.nus.edu.sg

"Different Classification of Hours". Math.nus.edu.sg. Archived from the original on 2018-09-12. Retrieved 2018-09-20.

oup.com (Global: 292^nd place; English: 233^rd place)

academic.oup.com

Sōma & al. (2004), p. 887. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 889. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 888. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 904. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 896. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.

pyramidtextsonline.com (Global: low place; English: low place)

Vygus (2015), p. 400. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 408. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 409. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 410. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 412. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1235. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1239. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1240. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.

royin.go.th (Global: low place; English: low place)

Thongprasert (1985), pp. 229–237. Thongprasert, Chamnong (1985). "ทุ่ม-โมง-นาฬิกา [Thum-Mong-Nalika]". ภาษาไทยไขขาน [Thai Unlocked] (in Thai). Bangkok, TH: Prae Pitaya Press. Archived from the original on 2010-06-07. Retrieved 2017-03-08.

scientificamerican.com (Global: 1,110^th place; English: 817^th place)

Andrewes, William J. H. (February 1, 2006). "A Chronicle Of Timekeeping". Scientific American. Archived from the original on 2024-08-02. Retrieved 2024-08-20.
"Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day?". Scientific American. Archived from the original on 2023-09-20. Retrieved 2022-01-24.

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

F. Richard Stephenson; Louay J. Fatoohi (May 1994). "The Babylonian Unit of Time". Journal for the History of Astronomy. 25 (2): 99–110. Bibcode:1994JHA....25...99S. doi:10.1177/002182869402500203. S2CID 117951139.

soc.go.th (Global: 335^th place; English: 2,113^th place)

ratchakitcha.soc.go.th

"ประกาศใช้ทุ่มโมงยาม", Royal Gazette, No. 17 (PDF), 29 July 1901, p. 206, archived from the original (PDF) on 9 June 2012, retrieved 8 March 2017. (in Thai)

tufts.edu (Global: 192^nd place; English: 165^th place)

perseus.tufts.edu

Polybius. "15 Mode of Calculating Time". Histories, Book 9.

uc.pt (Global: 5,894^th place; English: 9,117^th place)

digitalis.uc.pt

Canhão, Telo Ferreira (2013). "A Timeless Legacy: the Calendars of Ancient Egypt". Alexandrea ad Aegyptvm: The legacy of multiculturalismo in antiquity. Porto: Edições Afrontamento. pp. 283–301. doi:10.14195/978-989-26-0966-9_20. ISBN 9789892609669. Archived from the original on 2019-01-26. Retrieved 2019-01-25.

uchicago.edu (Global: 226^th place; English: 199^th place)

oi.uchicago.edu

Parker (1950), pp. 30–2. Parker, Richard Anthony (1950). The Calendars of Ancient Egypt (PDF). Studies in Ancient Oriental Civilization. Vol. 26. Chicago, IL: University of Chicago Press. Archived (PDF) from the original on 2023-01-11. Retrieved 2017-03-07.
Parker (1950), p. 40. Parker, Richard Anthony (1950). The Calendars of Ancient Egypt (PDF). Studies in Ancient Oriental Civilization. Vol. 26. Chicago, IL: University of Chicago Press. Archived (PDF) from the original on 2023-01-11. Retrieved 2017-03-07.

umich.edu (Global: 429^th place; English: 307^th place)

ocbaxtersagart.lsait.lsa.umich.edu

Baxter & al. (2014). Baxter, William H.; Laurent Sagart (2014). Old Chinese: A New Reconstruction. Oxford, UK: Oxford University Press. "parts available here". The Baxter-Sagart reconstruction of Old Chinese. University of Michigan. 20 September 2014. version 1.1. Archived from the original on 19 February 2023. Retrieved 14 March 2017.

vatican.va (Global: 184^th place; English: 336^th place)

Paul VI (4 December 1963), Constitution on the Sacred Liturgy, Vatican City, §89(d), archived from the original on 21 February 2008, retrieved 15 March 2020{{citation}}: CS1 maint: location missing publisher (link)

web.archive.org (Global: 1^st place; English: 1^st place)

Andrewes, William J. H. (February 1, 2006). "A Chronicle Of Timekeeping". Scientific American. Archived from the original on 2024-08-02. Retrieved 2024-08-20.
Liddell, Henry George; Scott, Robert; Jones, Henry Stuart. "ὥρα". A Greek-English Lexicon. Α.ΙΙ.2. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
"Early Clocks". A Walk Through Time. National Institute of Standards and Technology. 12 August 2009. Archived from the original on 2 August 2016. Retrieved 13 October 2022.
Paul VI (4 December 1963), Constitution on the Sacred Liturgy, Vatican City, §89(d), archived from the original on 21 February 2008, retrieved 15 March 2020{{citation}}: CS1 maint: location missing publisher (link)
"Different Classification of Hours". Math.nus.edu.sg. Archived from the original on 2018-09-12. Retrieved 2018-09-20.
"Saudi Aramco World : Dinner At When?". archive.aramcoworld.com. Archived from the original on 2016-09-28. Retrieved 2018-08-09.
Parker (1950), pp. 30–2. Parker, Richard Anthony (1950). The Calendars of Ancient Egypt (PDF). Studies in Ancient Oriental Civilization. Vol. 26. Chicago, IL: University of Chicago Press. Archived (PDF) from the original on 2023-01-11. Retrieved 2017-03-07.
Parker (1950), p. 40. Parker, Richard Anthony (1950). The Calendars of Ancient Egypt (PDF). Studies in Ancient Oriental Civilization. Vol. 26. Chicago, IL: University of Chicago Press. Archived (PDF) from the original on 2023-01-11. Retrieved 2017-03-07.
"Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day?". Scientific American. Archived from the original on 2023-09-20. Retrieved 2022-01-24.
Vygus (2015), p. 400. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 408. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 409. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 410. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 412. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1235. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1239. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Vygus (2015), p. 1240. Vygus, Mark (2015), Middle Egyptian Dictionary (PDF), archived (PDF) from the original on 2020-08-03, retrieved 2023-07-07.
Baxter & al. (2014). Baxter, William H.; Laurent Sagart (2014). Old Chinese: A New Reconstruction. Oxford, UK: Oxford University Press. "parts available here". The Baxter-Sagart reconstruction of Old Chinese. University of Michigan. 20 September 2014. version 1.1. Archived from the original on 19 February 2023. Retrieved 14 March 2017.
Sōma & al. (2004), p. 887. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Petersen (1992), p. 129. Petersen, Jens Østergård (1992). "The Taiping Jing and the A.D. 102 clepsydra reform". Acta Orientalia. 53. Copenhagen, DK: 122–158. Archived from the original on 2022-01-11. Retrieved 2017-12-19.
Petersen (1992), p. 125. Petersen, Jens Østergård (1992). "The Taiping Jing and the A.D. 102 clepsydra reform". Acta Orientalia. 53. Copenhagen, DK: 122–158. Archived from the original on 2022-01-11. Retrieved 2017-12-19.
Sōma & al. (2004), p. 889. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 888. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 904. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Sōma & al. (2004), p. 896. Sōma, Mitsuru; Kinaki Kawabata; Kiyotaka Tanikawa (25 October 2004). "Units of Time in Ancient China and Japan". Publications of the Astronomical Society of Japan. 56 (5). Tokyo, JP: 887–904. doi:10.1093/pasj/56.5.887. Archived from the original on 14 March 2017. Retrieved 14 March 2017.
Canhão, Telo Ferreira (2013). "A Timeless Legacy: the Calendars of Ancient Egypt". Alexandrea ad Aegyptvm: The legacy of multiculturalismo in antiquity. Porto: Edições Afrontamento. pp. 283–301. doi:10.14195/978-989-26-0966-9_20. ISBN 9789892609669. Archived from the original on 2019-01-26. Retrieved 2019-01-25.
Thongprasert (1985), pp. 229–237. Thongprasert, Chamnong (1985). "ทุ่ม-โมง-นาฬิกา [Thum-Mong-Nalika]". ภาษาไทยไขขาน [Thai Unlocked] (in Thai). Bangkok, TH: Prae Pitaya Press. Archived from the original on 2010-06-07. Retrieved 2017-03-08.
"ประกาศใช้ทุ่มโมงยาม", Royal Gazette, No. 17 (PDF), 29 July 1901, p. 206, archived from the original (PDF) on 9 June 2012, retrieved 8 March 2017. (in Thai)

Hour (English Wikipedia)

academia.edu (Global: 105th place; English: 99th place)

adsabs.harvard.edu (Global: 14th place; English: 9th place)

ui.adsabs.harvard.edu

aramcoworld.com (Global: low place; English: 8,827th place)

archive.aramcoworld.com

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lsj.gr (Global: low place; English: low place)

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math.nus.edu.sg

oup.com (Global: 292nd place; English: 233rd place)

academic.oup.com

pyramidtextsonline.com (Global: low place; English: low place)

royin.go.th (Global: low place; English: low place)

scientificamerican.com (Global: 1,110th place; English: 817th place)

semanticscholar.org (Global: 15th place; English: 8th place)

api.semanticscholar.org

soc.go.th (Global: 335th place; English: 2,113th place)

ratchakitcha.soc.go.th

tufts.edu (Global: 192nd place; English: 165th place)

perseus.tufts.edu

uc.pt (Global: 5,894th place; English: 9,117th place)

digitalis.uc.pt

uchicago.edu (Global: 226th place; English: 199th place)

oi.uchicago.edu

umich.edu (Global: 429th place; English: 307th place)

ocbaxtersagart.lsait.lsa.umich.edu

vatican.va (Global: 184th place; English: 336th place)

web.archive.org (Global: 1st place; English: 1st place)

academia.edu (Global: 105^th place; English: 99^th place)

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

aramcoworld.com (Global: low place; English: 8,827^th place)

archive.org (Global: 6^th place; English: 6^th place)

bipm.org (Global: 1,781^st place; English: 2,481^st place)

books.google.com (Global: 3^rd place; English: 3^rd place)

doi.org (Global: 2^nd place; English: 2^nd place)

en.wikisource.org (Global: 82^nd place; English: 41^st place)

nist.gov (Global: 708^th place; English: 742^nd place)

nus.edu.sg (Global: 2,453^rd place; English: 1,629^th place)

oup.com (Global: 292^nd place; English: 233^rd place)

scientificamerican.com (Global: 1,110^th place; English: 817^th place)

semanticscholar.org (Global: 15^th place; English: 8^th place)

soc.go.th (Global: 335^th place; English: 2,113^th place)

tufts.edu (Global: 192^nd place; English: 165^th place)

uc.pt (Global: 5,894^th place; English: 9,117^th place)

uchicago.edu (Global: 226^th place; English: 199^th place)

umich.edu (Global: 429^th place; English: 307^th place)

vatican.va (Global: 184^th place; English: 336^th place)

web.archive.org (Global: 1^st place; English: 1^st place)