00:00 UTC is 12:00 AM on the UTC clock. The hour runs from 00:00 to 00:59 UTC — minutes 1 to 60 of the 1,440 in a day.
| City | Zone | 24-hour | 12-hour |
|---|---|---|---|
| Los Angeles | PST | 16:00previous day | 4:00 PM |
| Denver | MST | 17:00previous day | 5:00 PM |
| Chicago | CST | 18:00previous day | 6:00 PM |
| New York | EST | 19:00previous day | 7:00 PM |
| Toronto | EST | 19:00previous day | 7:00 PM |
| Mexico City | CST | 18:00previous day | 6:00 PM |
| São Paulo | BRT | 21:00previous day | 9:00 PM |
| London | GMT | 00:00 | 12:00 AM |
| Lagos | WAT | 01:00 | 1:00 AM |
| Paris | CET | 01:00 | 1:00 AM |
| Berlin | CET | 01:00 | 1:00 AM |
| Rome | CET | 01:00 | 1:00 AM |
| Istanbul | TRT | 03:00 | 3:00 AM |
| Dubai | GST | 04:00 | 4:00 AM |
| Karachi | PKT | 05:00 | 5:00 AM |
| Mumbai | IST | 05:30 | 5:30 AM |
| Jakarta | WIB | 07:00 | 7:00 AM |
| Singapore | SGT | 08:00 | 8:00 AM |
| Manila | PHT | 08:00 | 8:00 AM |
| Shanghai | CST | 08:00 | 8:00 AM |
| Seoul | KST | 09:00 | 9:00 AM |
| Tokyo | JST | 09:00 | 9:00 AM |
| Sydney | AEDT | 11:00 | 11:00 AM |
| Auckland | NZDT | 13:00 | 1:00 PM |
On the1440.com each of these minutes is sold to one buyer, who gets the whole front page for sixty seconds. This is a off-peak hour: $2 a minute, or $40 for all sixty in one purchase.