How long until 21:40?

👉 There are 20 hours, 28 minutes, 2 seconds remaining until 21:40
Countdown to 21:40
20Hours
:
28Minutes
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2Seconds
Saturday, October 24, 2026

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Time left until 21:40

How many more hours until 21:40 today
20Hours
How many minutes until 21:40 today
1,228Minutes
How many seconds until 21:40 today
73,682Seconds

Time until 21:40 from each hour

If it is nowTime leftMinutes
00:0021 h 40 min1,300
01:0020 h 40 min1,240
02:0019 h 40 min1,180
03:0018 h 40 min1,120
04:0017 h 40 min1,060
05:0016 h 40 min1,000
06:0015 h 40 min940
07:0014 h 40 min880
08:0013 h 40 min820
09:0012 h 40 min760
10:0011 h 40 min700
11:0010 h 40 min640
12:009 h 40 min580
13:008 h 40 min520
14:007 h 40 min460
15:006 h 40 min400
16:005 h 40 min340
17:004 h 40 min280
18:003 h 40 min220
19:002 h 40 min160
20:001 h 40 min100
21:0040 min40
22:0023 h 40 min1,420
23:0022 h 40 min1,360

Counted from the top of each hour to the next 21:40.

Some facts about 21:40

12-hour clock9:40 PM
24-hour clock21:40
Military time2140 (“twenty-one forty hours”)
In wordsTwenty minutes to ten
SpokenNine forty p.m.
Part of the dayNight
Minutes since midnight1,300
Seconds since midnight78,000
Day progress90.28%
Left in the day2 h 20 min
Angle between clock hands50°

About 21:40

9 PM is mid-evening, when many households start winding down and young children go to bed.

It is 40 minutes past the hour and 20 minutes before 10 PM.

To read 21:40 on a 12-hour clock subtract 12 from the hour: 21 − 12 = 9, so it is 9:40 PM.

Questions about 21:40

How long until 21:40?

Right now it is 20 hours, 28 minutes, 2 seconds until 21:40 today. The countdown above updates every second using your device's clock.

Is 21:40 in the morning or the evening?

21:40 falls in the night. On a 12-hour clock it is written 9:40 PM.

What is 21:40 in military time?

21:40 is 2140 in military time, spoken “twenty-one forty hours”.