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  2. Measurement microphone calibration - Wikipedia

    en.wikipedia.org/wiki/Measurement_microphone...

    The technique provides a measurement of the sensitivity of a microphone without the need for comparison with another previously calibrated microphone, and is instead traceable to reference electrical quantities such as volts and ohms, as well as length, mass and time. Although a given calibrated microphone will often have been calibrated by ...

  3. Date and time representation by country - Wikipedia

    en.wikipedia.org/wiki/Date_and_time...

    In Czech quarters and halves always refer to the following hour, e.g. čtvrt na osm (quarter on eight) meaning 7:15, půl osmé (half of eight) meaning 7:30 and tři čtvrtě na osm (three-quarters on eight) meaning 7:45. This corresponds to the time between 7:00 and 8:00 being the eighth hour of the day (the first hour starting at midnight).

  4. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    The two extreme time zones on Earth (both in the mid-Pacific) differ by 26 hours. Standard Time Zones, as of January 2, 2024 In the following list, only the rightmost indent of a group of locations is meant to indicate the area observing the offset; the places above and to the left are meant solely to indicate the area's parent administrative ...

  5. Date and time notation in Asia - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in_Asia

    If the minutes of a given time are less than ten, the preceding zero (零; líng) is included in speech. The time 08:05 would be read as bādiǎn língwǔfēn; 'eight hours zero-five minutes', similar to how English speakers would describe the same time as "eight oh-five". Both the 12-hour and 24-hour notations are used in spoken and written ...

  6. Time in Vietnam - Wikipedia

    en.wikipedia.org/wiki/Time_in_Vietnam

    Period in use Time offset from GMT Notes Prior to 1 July 1906 UTC+07:06:40: Local mean time: 1 July 1906 – 30 April 1911 UTC+07:06:30: 106°37'30"E French Time: 1 May 1911 – 30 December 1942 UTC+07:00: Standard Time Zone: 31 December 1942 – 13 March 1945 UTC+08:00: Standard Time Zone: 14 March 1945 – 1 September 1945 UTC+09:00: Tokyo ...

  7. Time in India - Wikipedia

    en.wikipedia.org/wiki/Time_in_India

    India uses only one time zone (even though it spans two geographical time zones) across the whole nation and all its territories, called Indian Standard Time (IST), which equates to UTC+05:30, i.e. five and a half hours ahead of Coordinated Universal Time (UTC). India does not currently observe daylight saving time (DST or summer time).

  8. Date and time notation in Vietnam - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in...

    In Vietnam, dates follow the "day month year" order. All-numeric dates can be written as: [1] d/m/yyyy (9/1/2021) d-m-yyyy (9-1-2021) dd/mm/yyyy (09/01/2021) dd-mm-yyyy (09-01-2021) A dot in the line (period or full stop) can also be used (i.e. 9.1.2021, 09.01.2021). In the full form, the month name is alphanumeric. Example: "9 tháng 1 năm 2021".

  9. Time and frequency transfer - Wikipedia

    en.wikipedia.org/wiki/Time_and_frequency_transfer

    In a two-way time transfer system, the two peers will both transmit and receive each other's messages, thus performing two one-way time transfers to determine the difference between the remote clock and the local clock. [4]: 118 The sum of these time differences is the round-trip delay between the two nodes. It is often assumed that this delay ...