Back نظام 12 ساعة Arabic 12-гадзінны фармат часу BE-X-OLD 12-часов часовник Bulgarian Sistema horari de 12 hores Catalan Taknaang 12-oras CEB AM og PM Danish 2-mal-12-Stunden-Zählung German Δωδεκάωρο σύστημα ώρας Greek 12-hour clock English Sistema horario de 12 horas Spanish
Jam 12 jam merupakan kelaziman waktu yang mana 24 jam dalam sehari terpecah kepada dua kala:[1] a.m. (dari bahasa Latin ante meridiem, bererti "sebelum tengah hari") dan p.m. (post meridiem, "selepas tengah hari").[2] Setiap kala terdiri daripada 12 jam yang berbilang: 12 (yang berfungsi sebagai sifar),[3] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, dan 11.
Jam 12 jam dimajukan sepanjang zaman dari pertengahan alaf kedua SM ke abad ke-16 M.
| Sistem 24 Jam | Sistem 12 Jam |
|---|---|
| 00:00:00 - 00:59:59 | 12:00:00 tengah malam - 12:59:59 tengah malam |
| 01:00:00 - 01:59:59 | 01:00:00 pagi - 01:59:59 pagi |
| 02:00:00 - 02:59:59 | 02:00:00 pagi - 02:59:59 pagi |
| 03:00:00 - 03:59:59 | 03:00:00 pagi - 03:59:59 pagi |
| 04:00:00 - 04:59:59 | 04:00:00 pagi - 04:59:59 pagi |
| 05:00:00 - 05:59:59 | 05:00:00 pagi - 05:59:59 pagi |
| 06:00:00 - 06:59:59 | 06:00:00 pagi - 06:59:59 pagi |
| 07:00:00 - 07:59:59 | 07:00:00 pagi - 07:59:59 pagi |
| 08:00:00 - 08:59:59 | 08:00:00 pagi - 08:59:59 pagi |
| 09:00:00 - 09:59:59 | 09:00:00 pagi - 09:59:59 pagi |
| 10:00:00 - 10:59:59 | 10:00:00 pagi - 10:59:59 pagi |
| 11:00:00 - 11:59:59 | 11:00:00 pagi - 11:59:59 pagi |
| 12:00:00 - 12:59:59 | 12:00:00 tengah hari - 12:59:59 tengah hari |
| 13:00:00 - 13:59:59 | 01:00:00 petang - 01:59:59 petang |
| 14:00:00 - 14:59:59 | 02:00:00 petang - 02:59:59 petang |
| 15:00:00 - 15:59:59 | 03:00:00 petang - 03:59:59 petang |
| 16:00:00 - 16:59:59 | 04:00:00 petang - 04:59:59 petang |
| 17:00:00 - 17:59:59 | 05:00:00 petang - 05:59:59 petang |
| 18:00:00 - 18:59:59 | 06:00:00 petang - 06:59:59 petang |
| 19:00:00 - 19:59:59 | 07:00:00 malam - 07:59:59 malam |
| 20:00:00 - 20:59:59 | 08:00:00 malam - 08:59:59 malam |
| 21:00:00 - 21:59:59 | 09:00:00 malam - 09:59:59 malam |
| 22:00:00 - 22:59:59 | 10:00:00 malam - 10:59:59 malam |
| 23:00:00 - 23:59:59 | 11:00:00 malam - 11:59:59 malam |
| * Rujuk "Perbezaan penyataan tengah hari dan tengah malam" | |
- ^ "Time". The New Encyclopædia Britannica. 28. 2005. m/s. 670 2a.
- ^ "National Institute of Standards and Technology's Physics Laboratory, Time and Frequency Division FAQ". Dicapai pada 28 November 2008.
- ^ Susan Addington. "Modular Arithmetic". Diarkibkan daripada yang asal pada 2008-07-04. Dicapai pada 28 November 2008.