23:58 UTC is 11:58 PM on the UTC clock — 7:58 PM in New York, 11:58 PM in London, 5:28 AM in Mumbai, 8:58 AM in Tokyo. It is minute 1,439 of the 1,440 in a day, with 1 still to come before midnight UTC.
Converted for today, 2026-10-31, with daylight saving as it stands. In military and aviation time 23:58 UTC is written 2358Z, “Zulu”.
| City | Zone | 24-hour | 12-hour |
|---|---|---|---|
| Los Angeles | PDT | 16:58 | 4:58 PM |
| Denver | MDT | 17:58 | 5:58 PM |
| Chicago | CDT | 18:58 | 6:58 PM |
| New York | EDT | 19:58 | 7:58 PM |
| Toronto | EDT | 19:58 | 7:58 PM |
| Mexico City | CST | 17:58 | 5:58 PM |
| São Paulo | BRT | 20:58 | 8:58 PM |
| London | GMT | 23:58 | 11:58 PM |
| Lagos | WAT | 00:58next day | 12:58 AM |
| Paris | CET | 00:58next day | 12:58 AM |
| Berlin | CET | 00:58next day | 12:58 AM |
| Rome | CET | 00:58next day | 12:58 AM |
| Istanbul | TRT | 02:58next day | 2:58 AM |
| Dubai | GST | 03:58next day | 3:58 AM |
| Karachi | PKT | 04:58next day | 4:58 AM |
| Mumbai | IST | 05:28next day | 5:28 AM |
| Jakarta | WIB | 06:58next day | 6:58 AM |
| Singapore | SGT | 07:58next day | 7:58 AM |
| Manila | PHT | 07:58next day | 7:58 AM |
| Shanghai | CST | 07:58next day | 7:58 AM |
| Seoul | KST | 08:58next day | 8:58 AM |
| Tokyo | JST | 08:58next day | 8:58 AM |
| Sydney | AEDT | 10:58next day | 10:58 AM |
| Auckland | NZDT | 12:58next day | 12:58 PM |
On the1440.com every minute of the day is sold once. Whoever buys 23:58 UTC gets the whole front page from 23:58:00 to 23:58:59: their name in full-screen type, one line of copy and a link, with nothing else on the screen. It is a off-peak minute, so it costs $2.
Nothing yet. Every time 23:58 UTC has gone unsold, the1440.com showed dead air. The first name here is still up for grabs.