23:40 UTC is 11:40 PM on the UTC clock — 7:40 PM in New York, 11:40 PM in London, 5:10 AM in Mumbai, 8:40 AM in Tokyo. It is minute 1,421 of the 1,440 in a day, with 19 still to come before midnight UTC.
Converted for today, 2026-10-31, with daylight saving as it stands. In military and aviation time 23:40 UTC is written 2340Z, “Zulu”.
| City | Zone | 24-hour | 12-hour |
|---|---|---|---|
| Los Angeles | PDT | 16:40 | 4:40 PM |
| Denver | MDT | 17:40 | 5:40 PM |
| Chicago | CDT | 18:40 | 6:40 PM |
| New York | EDT | 19:40 | 7:40 PM |
| Toronto | EDT | 19:40 | 7:40 PM |
| Mexico City | CST | 17:40 | 5:40 PM |
| São Paulo | BRT | 20:40 | 8:40 PM |
| London | GMT | 23:40 | 11:40 PM |
| Lagos | WAT | 00:40next day | 12:40 AM |
| Paris | CET | 00:40next day | 12:40 AM |
| Berlin | CET | 00:40next day | 12:40 AM |
| Rome | CET | 00:40next day | 12:40 AM |
| Istanbul | TRT | 02:40next day | 2:40 AM |
| Dubai | GST | 03:40next day | 3:40 AM |
| Karachi | PKT | 04:40next day | 4:40 AM |
| Mumbai | IST | 05:10next day | 5:10 AM |
| Jakarta | WIB | 06:40next day | 6:40 AM |
| Singapore | SGT | 07:40next day | 7:40 AM |
| Manila | PHT | 07:40next day | 7:40 AM |
| Shanghai | CST | 07:40next day | 7:40 AM |
| Seoul | KST | 08:40next day | 8:40 AM |
| Tokyo | JST | 08:40next day | 8:40 AM |
| Sydney | AEDT | 10:40next day | 10:40 AM |
| Auckland | NZDT | 12:40next day | 12:40 PM |
On the1440.com every minute of the day is sold once. Whoever buys 23:40 UTC gets the whole front page from 23:40:00 to 23:40:59: 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 23:40 UTC has gone unsold, the1440.com showed dead air. The first name here is still up for grabs.