Convert between date and unix timestamp: Difference between revisions
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* [https://www.extendoffice.com/documents/excel/2473-excel-timestamp-to-date.html How to convert between date and Unix timestamp in Excel?] | * [https://www.extendoffice.com/documents/excel/2473-excel-timestamp-to-date.html How to convert between date and Unix timestamp in Excel?] | ||
timezone: UTC | |||
<pre> | <pre> | ||
= (VALUE( date_time )-25569)*86400 | = (VALUE( date_time )-25569)*86400 | ||
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input data (A2 cell): YYYY/MM/DD (e.g. {{CURRENTYEAR}}/{{CURRENTMONTH}}/{{CURRENTDAY2}} ) or YYYY/MM/DD HH:MM (e.g. {{CURRENTYEAR}}/{{CURRENTMONTH}}/{{CURRENTDAY2}} {{CURRENTTIME}}) {{kbd | key==(A2-DATE(1970,1,1))*86400}} <ref>[http://stackoverflow.com/questions/1703505/excel-date-to-unix-timestamp Excel date to Unix timestamp - Stack Overflow]</ref> | input data (A2 cell): YYYY/MM/DD (e.g. {{CURRENTYEAR}}/{{CURRENTMONTH}}/{{CURRENTDAY2}} ) or YYYY/MM/DD HH:MM (e.g. {{CURRENTYEAR}}/{{CURRENTMONTH}}/{{CURRENTDAY2}} {{CURRENTTIME}}) {{kbd | key==(A2-DATE(1970,1,1))*86400}} <ref>[http://stackoverflow.com/questions/1703505/excel-date-to-unix-timestamp Excel date to Unix timestamp - Stack Overflow]</ref> | ||
timezone: UTC | |||
<pre> | <pre> | ||
= TEXT( (Unixtime / 86400) + 25569, "YYYY-mm-dd hh:mm:ss") | = TEXT( (Unixtime / 86400) + 25569, "YYYY-mm-dd hh:mm:ss") | ||
Revision as of 14:00, 9 September 2019
terms of time format
| format \ date | 1899/12/31 (1900/1/0) | 1900/1/1 | 1970/1/1 | 2016/1/1 | notes |
|---|---|---|---|---|---|
| value of unix timestamp (the number of seconds since 1970/01/01[1]) |
-2209075200 | -2208988800 | 0 | 1451606400 | |
| value of Excel DATEVALUE function or LibreOffice DATEVALUE function (Excel: number of days since 1898/12/31) |
0 | 1 | 25569 | 42370 | 5 digit numbers after 1970/1/1 |
VALUE() function on Excel is number of days since 1899/12/31. DATEVALUE of 1900/1/1 will return 1. VALUE() function on Google sheet is number of days since 1899/12/30 [Last visited: 2019-05-22]
Convert between date and unix timestamp
Online tool
// timestamp: 1552521600 // Is equivalent to: // 03/14/2019 @ 12:00am (UTC) // 2019-03-14T00:00:00+00:00 in ISO 8601 // Thu, 14 Mar 2019 00:00:00 +0000 in RFC 822, 1036, 1123, 2822 // Thursday, 14-Mar-19 00:00:00 UTC in RFC 2822 // 2019-03-14T00:00:00+00:00 in RFC 3339
PHP way: convert to date time from unix timestamp
Using the date() function & date_default_timezone_set
date_default_timezone_set('UTC');
$timestamp = 0;
echo date('Y-m-d H:i:s', $timestamp) . PHP_EOL; // 1970-01-01 00:00:00
date_default_timezone_set("Europe/London");
$timestamp = 1552521600;
echo date('Y-m-d H:i:s', $timestamp) . PHP_EOL; // 2019-03-14 00:00:00
date_default_timezone_set("Asia/Taipei");
$timestamp = 1552521600;
echo date('Y-m-d H:i:s', $timestamp) . PHP_EOL; // 2019-03-14 08:00:00
PHP way: convert to unix timestamp from date time
Using the strtotime() function
date_default_timezone_set("Europe/London");
echo strtotime('2019-03-14 00:00:00') . PHP_EOL; // 1552521600
date_default_timezone_set("Asia/Taipei");
echo strtotime('2019-03-14 08:00:00') . PHP_EOL; // 1552521600
Excel way: convert to date from unix timestamp
- 怎樣轉換 Excel 日期時間成 Unix 時間戳記 (unix timestamp)
- How to convert between date and Unix timestamp in Excel?
timezone: UTC
= (VALUE( date_time )-25569)*86400
Excel way: convert to unix timestamp from date
input data (A2 cell): YYYY/MM/DD (e.g. 2024/04/16 ) or YYYY/MM/DD HH:MM (e.g. 2024/04/16 06:14) =(A2-DATE(1970,1,1))*86400 [2]
timezone: UTC
= TEXT( (Unixtime / 86400) + 25569, "YYYY-mm-dd hh:mm:ss")