The table below looks at the statistics for jQuery skills in IT contracts advertised across the UK. Included is a guide to the contractor rates offered in IT contracts that have cited jQuery over the 3 months to 2 July 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
2 Jul 2016
Same period 2015 Same period 2014
jQuery
Rank 65 51 44
Rank change year-on-year
-14 -7
Contract jobs citing jQuery 1688 1974 2214
As % of all contract IT jobs located in the UK 3.16% 3.53% 4.11%
As % of the Libraries, Frameworks & Software Standards category 11.08% 12.80% 14.78%
Number of daily rates quoted 1286 1433 1488
Median daily rate £375 £350 £350
Median daily rate % change year-on-year
+7.14% -
90% offered a daily rate of more than £265 £250 £250
10% offered a daily rate of more than £500 £475 £470
UK excluding London median daily rate £340 £325 £325
% change year-on-year
+4.61% -
Number of hourly rates quoted 21 15 25
Median hourly rate £43.00 £23.99 £28.75
Median hourly rate % change year-on-year
+79.24% -16.55%
90% offered a hourly rate of more than £22.00 £22.00 £13.00
10% offered a hourly rate of more than £50.00 £40.00 £47.50
UK excluding London median hourly rate £43.00 £28.69 £25.00
% change year-on-year
+49.87% +14.76%

The following table is for comparison with the above and provides statistics for the entire Libraries, Frameworks & Software Standards category in contract jobs advertised across the UK.

Libraries, Frameworks & Software Standards Category
UK
Contract IT job ads with a match in the
Libraries, Frameworks & Software Standards category
15236 15422 14979
As % of all contract IT jobs located in the UK 28.51% 27.54% 27.81%
Number of daily rates quoted 10733 10292 9757
Median daily rate £420 £388 £375
Median daily rate % change year-on-year
+8.38% +3.33%
90% offered a daily rate of more than £300 £285 £270
10% offered a daily rate of more than £550 £550 £525
UK excluding London median daily rate £375 £350 £350
% change year-on-year
+7.14% -
Number of hourly rates quoted 187 226 217
Median hourly rate £36.00 £38.00 £35.00
Median hourly rate % change year-on-year
-5.26% +8.57%
90% offered a hourly rate of more than £18.80 £19.00 £18.00
10% offered a hourly rate of more than £50.00 £55.00 £52.50
UK excluding London median hourly rate £36.00 £40.00 £35.00
% change year-on-year
-10.00% +14.28%

jQuery
Jobs Demand Trend

The demand trend of contract jobs citing jQuery as a proportion of all IT contracts with a match in the Libraries, Frameworks & Software Standards category.

jQuery Jobs Demand Trend in the UK

jQuery
Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing jQuery within the UK.

jQuery Daily Rate Trend in the UK

jQuery
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing jQuery within the UK over the 3 months to 2 July 2016.

jQuery Daily Rate Histogram in the UK

jQuery
Hourly Rate Trend

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing jQuery within the UK.

jQuery Hourly Rate Trend in the UK

jQuery
Hourly Rate Histogram

This chart provides a histogram of hourly rates quoted in contract IT jobs citing jQuery within the UK over the 3 months to 2 July 2016.

jQuery Hourly Rate Histogram in the UK

jQuery
Top 30 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing jQuery within the UK over the 3 months to 2 July 2016. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England -14 1555 £375 +7.14% 870
London -11 747 £400 +6.66% 284
South East -1 274 £350 +3.70% 165
South West +8 124 £340 +4.61% 63
City of London +1 121 £400 +6.66% 53
West Midlands -12 100 £255 -15.00% 48
Scotland 0 99 £330 -2.22% 29
Yorkshire -25 94 £339 +4.23% 72
North West -22 89 £338 -0.73% 106
Hampshire +34 79 £325 - 54
Manchester +16 68 £338 +3.84% 62
East of England +12 68 £375 +15.38% 72
West Yorkshire -32 59 £335 +3.07% 46
Birmingham +15 52 £250 - 11
Leeds -35 48 £335 +3.07% 35
Surrey -1 45 £400 +3.22% 17
East Midlands -14 43 £338 +18.42% 40
Edinburgh -2 42 £365 +8.14% 9
East Sussex +6 29 £450 +50.00% 16
Cambridgeshire +17 28 £375 +15.38% 27
Brighton +4 28 £450 +50.00% 10
Wales +16 27 £388 +7.63% 7
South Yorkshire +16 26 £375 +20.96% 11
Wiltshire +5 26 £323 +0.78% 9
South Wales +11 25 £389 +9.50% 5
West Sussex -5 25 £345 +2.22% 5
Bristol -23 25 £325 +4.00% 14
Buckinghamshire -5 24 £319 +6.25% 22
Glasgow +15 23 £325 - 20
Berkshire -15 23 £331 - 25

jQuery
Top 30 Related IT Skills

For the 6 months to 2 July 2016, IT contractor jobs citing jQuery also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for jQuery.

1 3038 (85.24%) JavaScript
2 2624 (73.63%) HTML
3 2621 (73.54%) CSS
4 1524 (42.76%) Agile Software Development
5 1464 (41.08%) HTML5
6 1387 (38.92%) .NET
7 1266 (35.52%) C#
8 1211 (33.98%) MVC
9 1134 (31.82%) AngularJS
10 1064 (29.85%) CSS3
11 989 (27.75%) SQL
12 925 (25.95%) SQL Server
13 924 (25.93%) Web Development
14 899 (25.22%) Java
15 866 (24.30%) ASP.NET
16 808 (22.67%) TDD
17 800 (22.45%) Front End Development
18 612 (17.17%) Ajax
19 593 (16.64%) XML
20 587 (16.47%) Twitter Bootstrap
21 558 (15.66%) Scrum
22 542 (15.21%) Git (software)
23 529 (14.84%) PHP
24 527 (14.79%) Sass
25 518 (14.53%) ASP.NET MVC
26 517 (14.51%) Web Services
27 505 (14.17%) OO
28 428 (12.01%) Microsoft
28 428 (12.01%) Finance
29 423 (11.87%) .NET Framework

jQuery
Top Related IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 325 (9.12%) CMS
2 231 (6.48%) SharePoint
3 185 (5.19%) IIS
4 135 (3.79%) Apache
5 123 (3.45%) Tomcat
6 110 (3.09%) WordPress
7 90 (2.53%) JBoss
8 85 (2.38%) SharePoint 2010
9 84 (2.36%) SharePoint 2013
10 81 (2.27%) Drupal
11 78 (2.19%) Confluence
12 65 (1.82%) Umbraco
13 63 (1.77%) Elasticsearch
14 59 (1.66%) WebSphere
15 38 (1.07%) Sitecore CMS
16 35 (0.98%) SharePoint Server
17 29 (0.81%) BizTalk Server
18 28 (0.79%) WebLogic
19 27 (0.76%) Adobe Experience Manager
20 23 (0.65%) GeoServer
Applications
1 154 (4.32%) Photoshop
2 142 (3.98%) MS Excel
3 59 (1.66%) Adobe Illustrator
4 45 (1.26%) MS Office
5 24 (0.67%) InfoPath
5 24 (0.67%) OmniGraffle
6 20 (0.56%) Adobe Creative Suite
7 19 (0.53%) MS Visio
8 11 (0.31%) GIMP
9 10 (0.28%) Fireworks
9 10 (0.28%) MS PowerPoint
10 8 (0.22%) SPSS
11 6 (0.17%) Gliffy
12 4 (0.11%) Adobe After Effects
12 4 (0.11%) LaTeX
13 3 (0.084%) InVision
14 2 (0.056%) MS Project
15 1 (0.028%) InDesign
15 1 (0.028%) ProjectWise
Business Applications
1 61 (1.71%) Dynamics CRM
2 29 (0.81%) SAP Oil and Gas
3 20 (0.56%) Magento
4 14 (0.39%) Dynamics AX
5 12 (0.34%) BigMachines
5 12 (0.34%) Eloqua
6 11 (0.31%) Payment Gateway
7 10 (0.28%) SDL Web 8
8 9 (0.25%) OpenText VIM for SAP
9 5 (0.14%) Oracle EBS
10 2 (0.056%) Dynamics NAV
10 2 (0.056%) KANA IQ
10 2 (0.056%) Salesforce.com CRM
10 2 (0.056%) Unica
11 1 (0.028%) nopCommerce
11 1 (0.028%) OpenCart
11 1 (0.028%) Oracle BPM
11 1 (0.028%) Oracle Retail
11 1 (0.028%) Remedy ITSM
11 1 (0.028%) Scribe Insight
Cloud Services
1 116 (3.25%) Amazon AWS
1 116 (3.25%) Microsoft Azure
2 69 (1.94%) GitHub
3 61 (1.71%) SaaS
4 48 (1.35%) Office 365
5 21 (0.59%) Amazon EC2
6 20 (0.56%) Cloud Computing
7 17 (0.48%) Google Analytics
8 16 (0.45%) AWS CloudFormation
9 12 (0.34%) Google Cloud Platform
10 9 (0.25%) Lucidchart
11 7 (0.20%) Amazon Kinesis
11 7 (0.20%) Amazon S3
12 6 (0.17%) Google App Engine
12 6 (0.17%) Heroku
13 5 (0.14%) Adobe Analytics
13 5 (0.14%) CloudFront
13 5 (0.14%) IaaS
13 5 (0.14%) Route 53
14 3 (0.084%) Amazon EMR
Communications & Networking
1 73 (2.05%) HTTP
2 66 (1.85%) Internet
3 41 (1.15%) Intranet
4 38 (1.07%) Network Security
5 28 (0.79%) DNS
6 22 (0.62%) LDAP
7 19 (0.53%) SMTP
7 19 (0.53%) TCP/IP
8 14 (0.39%) SSL
9 9 (0.25%) AMQP
10 8 (0.22%) Extranet
10 8 (0.22%) Remote Desktop
10 8 (0.22%) SNMP
11 7 (0.20%) Skype
12 6 (0.17%) Firewall
12 6 (0.17%) FTP
13 5 (0.14%) SSH
14 4 (0.11%) Kerberos
14 4 (0.11%) SAN
15 3 (0.084%) HTTPS
Database & Business Intelligence
1 925 (25.95%) SQL Server
2 373 (10.47%) MySQL
3 197 (5.53%) MongoDB
4 170 (4.77%) Relational Database
5 135 (3.79%) SQL Server 2008
6 132 (3.70%) NoSQL
7 111 (3.11%) SQL Server 2012
8 93 (2.61%) SQL Server Reporting Services
9 81 (2.27%) Oracle Database
10 75 (2.10%) SQL Server Integration Services
11 74 (2.08%) PostgreSQL
12 71 (1.99%) Redis
13 62 (1.74%) Hadoop
14 52 (1.46%) Big Data
15 43 (1.21%) GIS
16 35 (0.98%) SQL Server Analysis Services
17 30 (0.84%) DB2
18 29 (0.81%) SQL Server 2014
19 26 (0.73%) RDBMS
20 25 (0.70%) SQL Server 2005
Development Applications
1 542 (15.21%) Git (software)
2 341 (9.57%) Visual Studio
3 278 (7.80%) Subversion
4 247 (6.93%) Grunt
5 219 (6.14%) Team Foundation Server
6 194 (5.44%) JUnit
7 179 (5.02%) Selenium
8 173 (4.85%) Jenkins
9 172 (4.83%) JIRA
10 145 (4.07%) Cucumber
11 138 (3.87%) Maven
12 134 (3.76%) gulp
13 121 (3.40%) NUnit
14 106 (2.97%) Jasmine
15 86 (2.41%) Mockito
16 76 (2.13%) Bower
17 67 (1.88%) Eclipse
17 67 (1.88%) TeamCity
18 65 (1.82%) Karma Test Runner
19 64 (1.80%) Mercurial
General
1 428 (12.01%) Finance
2 132 (3.70%) Banking
3 123 (3.45%) Marketing
4 85 (2.38%) Retail
5 73 (2.05%) Legal
6 60 (1.68%) Advertising
7 51 (1.43%) Telecoms
8 44 (1.23%) Manufacturing
9 36 (1.01%) Games
9 36 (1.01%) Publishing
10 33 (0.93%) Electronics
11 25 (0.70%) Back Office
12 23 (0.65%) Automotive
13 18 (0.51%) Front Office
14 16 (0.45%) Law
14 16 (0.45%) Military
15 15 (0.42%) Local Government
16 13 (0.36%) Investment Banking
17 11 (0.31%) Retail Banking
18 7 (0.20%) Financial Institution
Job Titles
1 3205 (89.93%) Developer
2 758 (21.27%) .NET Developer
3 692 (19.42%) Front End Developer (Client-Side Developer)
4 514 (14.42%) C# Developer
5 481 (13.50%) JavaScript Developer
6 419 (11.76%) C# .NET Developer
7 396 (11.11%) Java Developer
8 387 (10.86%) Web Developer
9 330 (9.26%) Senior Developer
10 274 (7.69%) ASP.NET MVC Developer
11 272 (7.63%) ASP.NET Developer
12 267 (7.49%) HTML Developer
13 229 (6.43%) PHP Developer
14 217 (6.09%) HTML CSS Developer
15 210 (5.89%) C# ASP.NET Developer
16 199 (5.58%) UI Developer
17 163 (4.57%) SQL Developer
18 149 (4.18%) Angular Developer
19 131 (3.68%) Software Developer
20 130 (3.65%) Agile Developer
Libraries, Frameworks & Software Standards
1 2624 (73.63%) HTML
2 2621 (73.54%) CSS
3 1464 (41.08%) HTML5
4 1387 (38.92%) .NET
5 1134 (31.82%) AngularJS
6 1064 (29.85%) CSS3
7 866 (24.30%) ASP.NET
8 612 (17.17%) Ajax
9 593 (16.64%) XML
10 587 (16.47%) Twitter Bootstrap
11 527 (14.79%) Sass
12 518 (14.53%) ASP.NET MVC
13 517 (14.51%) Web Services
14 423 (11.87%) .NET Framework
15 403 (11.31%) JSON
16 343 (9.62%) Spring
17 332 (9.32%) ASP.NET Web API
17 332 (9.32%) Node.js
18 300 (8.42%) Entity Framework
19 291 (8.16%) REST
Miscellaneous
1 399 (11.20%) User Experience
2 113 (3.17%) Analytical Skills
3 110 (3.09%) Mobile App
4 106 (2.97%) Computer Science
5 81 (2.27%) Enterprise Software
6 67 (1.88%) Visualisation
7 66 (1.85%) N-Tier
8 65 (1.82%) Inversion of Control
9 61 (1.71%) Digital Media
10 51 (1.43%) W3C
11 36 (1.01%) iPad
11 36 (1.01%) Management Information System
12 32 (0.90%) Mathematics
13 31 (0.87%) NHS
13 31 (0.87%) Virtual Team
14 19 (0.53%) Animation
14 19 (0.53%) Graphic Design
14 19 (0.53%) Social Media
15 18 (0.51%) Data Integration
16 17 (0.48%) Fintech
Operating Systems
1 285 (8.00%) Linux
2 207 (5.81%) Windows
3 206 (5.78%) Unix
4 74 (2.08%) Windows Server
5 69 (1.94%) Apple iOS
6 62 (1.74%) Android
7 40 (1.12%) Red Hat Enterprise Linux
8 25 (0.70%) Windows Server 2008
8 25 (0.70%) Windows Server 2012
9 16 (0.45%) CentOS
9 16 (0.45%) Windows Server 2003
10 13 (0.36%) Mac OS X
10 13 (0.36%) Oracle Linux
11 12 (0.34%) Ubuntu
12 11 (0.31%) Windows Mobile
12 11 (0.31%) Windows Phone
12 11 (0.31%) zOS
13 9 (0.25%) webOS
13 9 (0.25%) Windows Phone 7
14 7 (0.20%) Windows 7
Processes & Methodologies
1 1524 (42.76%) Agile Software Development
2 1211 (33.98%) MVC
3 924 (25.93%) Web Development
4 808 (22.67%) TDD
5 800 (22.45%) Front End Development
6 558 (15.66%) Scrum
7 505 (14.17%) OO
8 319 (8.95%) Continuous Integration
8 319 (8.95%) Unit Testing
9 315 (8.84%) Responsive Web Design
10 302 (8.47%) BDD
11 272 (7.63%) E-Commerce
12 243 (6.82%) OOP
13 229 (6.43%) Software Engineering
14 222 (6.23%) SDLC
15 164 (4.60%) CRM
16 155 (4.35%) SOA
17 154 (4.32%) Web Design
18 132 (3.70%) Workflow
19 117 (3.28%) Open Source
Programming Languages
1 3038 (85.24%) JavaScript
2 1266 (35.52%) C#
3 989 (27.75%) SQL
4 899 (25.22%) Java
5 529 (14.84%) PHP
6 253 (7.10%) T-SQL
7 180 (5.05%) Python
8 126 (3.54%) Perl
9 119 (3.34%) PL/SQL
10 110 (3.09%) VB.NET
11 105 (2.95%) PowerShell
12 104 (2.92%) VB
13 92 (2.58%) Groovy
14 86 (2.41%) Ruby
15 83 (2.33%) C
16 75 (2.10%) TypeScript
17 69 (1.94%) Scala
18 62 (1.74%) VBA
19 47 (1.32%) C++
20 43 (1.21%) VB6
Qualifications
1 254 (7.13%) Security Cleared
2 201 (5.64%) Degree
3 166 (4.66%) SC Cleared
4 81 (2.27%) DV Cleared
5 44 (1.23%) Microsoft Certification
6 41 (1.15%) BPSS Clearance
7 21 (0.59%) MCSD
8 12 (0.34%) MCTS
9 11 (0.31%) MCAD
9 11 (0.31%) MCITP
10 10 (0.28%) MCSE
11 9 (0.25%) BC Cleared
11 9 (0.25%) MCPD
11 9 (0.25%) Sun Certification
12 8 (0.22%) SAS Certification
13 7 (0.20%) CCNP
13 7 (0.20%) Cisco Certification
14 6 (0.17%) DBS Check
14 6 (0.17%) MCP
15 4 (0.11%) ITIL Certification
Quality Assurance & Compliance
1 67 (1.88%) QA
2 39 (1.09%) Disclosure Scotland
3 20 (0.56%) SLA
4 17 (0.48%) WCAG
5 10 (0.28%) ISO/IEC 27001
5 10 (0.28%) WAI
6 6 (0.17%) HMG Security Policy Framework
7 4 (0.11%) FATCA
8 3 (0.084%) PCI DSS
9 1 (0.028%) Data Quality
9 1 (0.028%) Dodd-Frank
9 1 (0.028%) EMIR
9 1 (0.028%) HL7
9 1 (0.028%) MiFID
9 1 (0.028%) PMBOK
System Software
1 48 (1.35%) Active Directory
2 30 (0.84%) Docker
3 8 (0.22%) Varnish
3 8 (0.22%) VMware Infrastructure
4 7 (0.20%) GeoWebCache
5 4 (0.11%) VMware ESXi
6 3 (0.084%) NFS
6 3 (0.084%) vCloud
6 3 (0.084%) Virtual Machines
6 3 (0.084%) VMware ESX
7 2 (0.056%) BitLocker
7 2 (0.056%) Firmware
7 2 (0.056%) VirtualBox
8 1 (0.028%) Hyper-V
8 1 (0.028%) vSphere
Systems Management
1 39 (1.09%) Puppet
2 20 (0.56%) Opscode Chef
3 14 (0.39%) AirWatch
4 11 (0.31%) Kibana
5 10 (0.28%) SCOM
6 9 (0.25%) Ansible
7 6 (0.17%) Control-M
8 5 (0.14%) Capistrano
8 5 (0.14%) Kubernetes
9 4 (0.11%) SCCM
9 4 (0.11%) Zenoss
10 3 (0.084%) Casper Suite
10 3 (0.084%) EMC VPLEX
10 3 (0.084%) HP Quality Center
10 3 (0.084%) Nagios
10 3 (0.084%) TeamSite
11 2 (0.056%) cPanel
11 2 (0.056%) Mesos
11 2 (0.056%) Systems Management Server (SMS)
12 1 (0.028%) MAINVIEW
Vendors
1 428 (12.01%) Microsoft
2 315 (8.84%) Oracle
3 88 (2.47%) Sitecore
4 86 (2.41%) Zend
5 85 (2.38%) Adobe
6 54 (1.52%) SAP
7 52 (1.46%) IBM
8 47 (1.32%) Salesforce.com
9 46 (1.29%) Google
9 46 (1.29%) Twitter
10 39 (1.09%) Red Hat
11 35 (0.98%) VMware
12 34 (0.95%) EPiServer
13 33 (0.93%) hybris
14 32 (0.90%) Atlassian
15 29 (0.81%) Telerik
16 24 (0.67%) Nintex
17 19 (0.53%) Sybase
18 17 (0.48%) ESRI
18 17 (0.48%) Siebel
Plymouth, Devon
Opus Recruitment Solutions Ltd
Rate: £170 per day
Posted: 20 hours ago
Surrey
Opus Recruitment Solutions Ltd
Rate: Competitive
Posted: 19 hours ago
London
Oho Group Ltd.
Rate: £350 - 450 per day
Posted: 15 hours ago
London
Explore Recruitment Solutions
Rate: £350 - £380 per day
Posted: 18 hours ago
West London
Coded People
Rate: £250 - £300 per day
Posted: 19 hours ago
Glasgow, Lanarkshire
Cathcart Associates Ltd
Posted: 21 hours ago
Birmingham, West Midlands (County)
Oscar
Rate: £300 - £350 per day
Posted: 21 hours ago
City, London
Coded People
Rate: £300 per day
Posted: 20 hours ago
High Wycombe, Buckinghamshire
Capita Resourcing - IT Resourcing
Rate: £300 per day
Posted: 22 hours ago
Manchester, Lancashire
Sanderson
Rate: £350 - £400 per day
Posted: 22 hours ago
Chester, Cheshire
Nigel Frank International Ltd
Posted: 20 hours ago
Manchester, Lancashire
Lorien Resourcing
Posted: 18 hours ago
Swindon, Wiltshire
Reed Technology
Rate: £300 - £350 per day + +
Posted: 14 hours ago
London
Information Technology Services
Rate: Market related
Posted: 12 hours ago
London
JM
Rate: £400 - £425 per day
Posted: 15 hours ago
West London
Stratospherec
Rate: From £250 to £300 per day
Posted: Yesterday
London
onezeero.
Rate: MARKET RATE + COMPETITIVE
Posted: 22 hours ago
Peterborough, Cambridgeshire
X4 Group
Rate: £300 - 340 per day
Posted: Yesterday
London
Salt
Rate: £40000 - £45000 per annum + benefits
Posted: Yesterday
Leeds, West Yorkshire
Experis Ltd
Rate: £375 - £450 per day + DOE
Posted: 2 days ago
Reading, Berkshire
Capita Resourcing - IT Resourcing
Rate: £370 - £380 per day
Posted: Yesterday
City, London
Data Idols
Rate: From £450 to £550 per day
Posted: Yesterday
Preston, Lancashire
X4 Group
Rate: £24 - 26 per hour
Posted: Yesterday
City, London
TEKsystems
Rate: £350 - £450 per day
Posted: 3 days ago
London
Joseph Harry Ltd
Posted: 2 days ago
City, London
Data Idols
Rate: From £450 to £550 per day
Posted: Yesterday
Cambridge, Cambridgeshire
Oscar
Rate: £300 - £350 per day
Posted: Yesterday
Bristol, Avon
Sanderson
Rate: £325 - £355 per day
Posted: Yesterday
London
Harvey Nash plc
Rate: £350 - £430 per day
Posted: Yesterday
Gloucestershire
Sanderson
Rate: £300 - £350 per day
Posted: Yesterday