The table below looks at the statistics for CSS skills in IT jobs advertised across the UK. Included is a guide to the salaries offered in IT jobs that have cited CSS over the 3 months to 21 January 2017 with a comparison to the same period over the previous 2 years.

3 months to
21 Jan 2017
Same period 2016 Same period 2015
Cascading Style Sheets (CSS)
UK
Rank 14 15 15
Rank change year-on-year
+1 0
Permanent jobs citing CSS 10658 12224 13358
As % of all permanent IT jobs located in the UK 12.84% 12.24% 12.73%
As % of the Libraries, Frameworks & Software Standards category 32.51% 32.17% 34.08%
Number of salaries quoted 9395 10772 11804
Median salary £42,500 £42,500 £40,000
Median salary % change year-on-year
- +6.25%
90% offered a salary of more than £29,000 £29,000 £26,000
10% offered a salary of more than £65,000 £60,000 £57,500
UK excluding London median salary £40,000 £37,500 £36,000
% change year-on-year
+6.66% +4.16%

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

Libraries, Frameworks & Software Standards Category
UK
Permanent IT job ads with a match in the
Libraries, Frameworks & Software Standards category
32787 37998 39195
As % of all permanent IT jobs located in the UK 39.51% 38.06% 37.34%
Number of salaries quoted 28313 32723 33794
Median salary £45,000 £45,000 £42,500
Median salary % change year-on-year
- +5.88%
90% offered a salary of more than £32,000 £31,500 £30,000
10% offered a salary of more than £70,000 £65,000 £67,500
UK excluding London median salary £42,500 £42,000 £40,000
% change year-on-year
+1.19% +5.00%

CSS
Jobs Demand Trend

The demand trend of job ads citing CSS as a proportion of all IT jobs with a match in the Libraries, Frameworks & Software Standards category.

CSS Jobs Demand Trend in the UK

CSS
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing CSS within the UK.

CSS Salary Trend in the UK

CSS
Salary Histogram

This chart provides a salary histogram for IT jobs citing CSS over the 3 months to 21 January 2017 within the UK.

CSS Salary Histogram in the UK

CSS
Top 30 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CSS within the UK over the 3 months to 21 January 2017. 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 Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +1 9979 £42,500 - 1724
London -1 3660 £52,500 +5.00% 576
South East +1 2025 £40,000 - 287
North West +2 887 £37,500 - 166
East of England 0 743 £40,000 +6.66% 132
West Midlands +2 711 £37,500 - 159
South West +3 688 £37,500 - 126
Yorkshire +1 679 £40,000 +5.26% 149
Manchester +4 608 £40,000 - 97
East Midlands +3 492 £37,500 +6.58% 102
Hampshire +1 481 £40,000 +14.28% 69
City of London -1 417 £55,000 +4.76% 131
West Yorkshire +1 394 £39,000 +2.63% 93
Berkshire +5 392 £42,500 - 50
Surrey +1 297 £42,500 - 32
Leeds 0 281 £40,000 +6.66% 65
Birmingham +2 246 £40,000 +3.22% 56
Cambridgeshire -2 240 £42,500 +6.25% 46
Scotland +1 236 £40,000 +6.66% 40
Bristol -2 236 £44,000 +14.28% 31
Oxfordshire +3 226 £37,500 -16.66% 40
Hertfordshire -3 207 £37,500 -16.66% 39
Buckinghamshire +1 205 £42,500 +4.93% 36
Nottinghamshire +5 186 £42,500 +21.42% 42
Wales 0 185 £35,000 - 15
West Sussex +1 164 £40,000 -3.61% 14
Reading +7 162 £42,500 +6.25% 16
Nottingham +6 158 £45,000 +28.57% 34
North Yorkshire +7 156 £41,500 +3.75% 29
Cambridge -3 150 £40,000 -5.88% 29

CSS
Top 30 Related IT Skills

For the 6 months to 21 January 2017, IT jobs citing CSS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for CSS.

1 21137 (95.04%) HTML
2 19091 (85.84%) JavaScript
3 9470 (42.58%) Agile Software Development
4 9055 (40.72%) .NET
5 8714 (39.18%) C#
6 8514 (38.28%) jQuery
7 8249 (37.09%) HTML5
8 7719 (34.71%) MVC
9 7042 (31.67%) AngularJS
10 6612 (29.73%) ASP.NET
11 6297 (28.32%) Web Development
12 5967 (26.83%) SQL
13 5861 (26.35%) CSS3
14 5509 (24.77%) SQL Server
15 4661 (20.96%) PHP
16 4507 (20.27%) Front End Development
17 4069 (18.30%) Java
18 3818 (17.17%) Git (software)
19 3712 (16.69%) TDD
20 3694 (16.61%) OO
21 3599 (16.18%) ASP.NET MVC
22 3390 (15.24%) MySQL
23 3369 (15.15%) Scrum
24 3207 (14.42%) Finance
25 3103 (13.95%) User Experience
26 3096 (13.92%) Web Services
27 3029 (13.62%) Microsoft
28 2921 (13.13%) Degree
29 2853 (12.83%) XML
30 2742 (12.33%) Node.js

CSS
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 1675 (7.53%) CMS
2 977 (4.39%) WordPress
3 691 (3.11%) IIS
4 651 (2.93%) Apache
5 601 (2.70%) SharePoint
6 531 (2.39%) Drupal
7 453 (2.04%) Umbraco
8 395 (1.78%) Elasticsearch
9 393 (1.77%) Tomcat
10 332 (1.49%) JBoss
11 250 (1.12%) WebSphere
12 228 (1.03%) nginx
13 219 (0.98%) Confluence
14 205 (0.92%) SharePoint 2013
15 178 (0.80%) WebLogic
16 166 (0.75%) Sitecore CMS
17 145 (0.65%) Adobe Experience Manager
18 139 (0.63%) NServiceBus
19 124 (0.56%) SharePoint 2010
20 107 (0.48%) Oracle SOA Suite
Applications
1 1202 (5.40%) MS Excel
2 1180 (5.31%) Photoshop
3 562 (2.53%) Adobe Illustrator
4 216 (0.97%) Adobe Creative Suite
5 172 (0.77%) MS Office
6 111 (0.50%) InDesign
7 108 (0.49%) Fireworks
8 78 (0.35%) InVision
9 64 (0.29%) MS PowerPoint
10 58 (0.26%) MS Visio
10 58 (0.26%) OmniGraffle
11 46 (0.21%) InfoPath
12 24 (0.11%) Adobe After Effects
13 21 (0.094%) Acrobat
14 17 (0.076%) GIMP
15 15 (0.067%) FrameMaker
16 13 (0.058%) Adobe Premiere
17 11 (0.049%) Pixate
18 10 (0.045%) Adobe Captivate
19 7 (0.031%) MS Project
Business Applications
1 482 (2.17%) Magento
2 110 (0.49%) Dynamics CRM
3 66 (0.30%) Payment Gateway
4 57 (0.26%) SAP Oil and Gas
5 40 (0.18%) Visualfiles
6 36 (0.16%) Shopify
7 35 (0.16%) OpenCart
8 34 (0.15%) Adobe Campaign
9 29 (0.13%) Oracle Cash Management
10 26 (0.12%) osCommerce
11 23 (0.10%) Dynamics AX
12 16 (0.072%) WebTrends
13 15 (0.067%) Oracle BPM
14 10 (0.045%) Eloqua
14 10 (0.045%) SAP CRM
15 9 (0.040%) Dynamics NAV
16 8 (0.036%) OpenText MBPM
17 7 (0.031%) Cognos Business Intelligence
17 7 (0.031%) Unica
18 6 (0.027%) nopCommerce
Cloud Services
1 1037 (4.66%) Microsoft Azure
2 972 (4.37%) Amazon AWS
3 540 (2.43%) SaaS
4 430 (1.93%) GitHub
5 242 (1.09%) Google Analytics
6 140 (0.63%) Office 365
7 122 (0.55%) Google Cloud Platform
8 84 (0.38%) Cloud Computing
9 81 (0.36%) PaaS
10 64 (0.29%) Adobe Analytics
11 60 (0.27%) Amazon EC2
12 53 (0.24%) Adobe Creative Cloud
13 51 (0.23%) Amazon S3
14 50 (0.22%) Sage Pay
15 43 (0.19%) Google App Engine
16 38 (0.17%) AdWords
16 38 (0.17%) Heroku
16 38 (0.17%) IaaS
17 33 (0.15%) AWS Elastic Beanstalk
17 33 (0.15%) Slack
Communications & Networking
1 649 (2.92%) HTTP
2 570 (2.56%) Internet
3 250 (1.12%) Intranet
4 178 (0.80%) TCP/IP
5 105 (0.47%) HTTPS
6 90 (0.40%) SSL
7 79 (0.36%) DNS
8 55 (0.25%) SMTP
9 45 (0.20%) SSH
10 43 (0.19%) Broadband
11 41 (0.18%) Firewall
12 38 (0.17%) ATM
13 32 (0.14%) FTP
14 31 (0.14%) LDAP
14 31 (0.14%) Skype
15 28 (0.13%) Extranet
15 28 (0.13%) SNMP
16 26 (0.12%) VPN
17 16 (0.072%) Unified Communications
18 14 (0.063%) Wireshark
Database & Business Intelligence
1 5509 (24.77%) SQL Server
2 3390 (15.24%) MySQL
3 1132 (5.09%) Relational Database
4 1047 (4.71%) MongoDB
5 813 (3.66%) NoSQL
6 641 (2.88%) SQL Server 2008
7 476 (2.14%) SQL Server Integration Services
8 462 (2.08%) SQL Server 2012
9 446 (2.01%) PostgreSQL
10 424 (1.91%) Big Data
11 379 (1.70%) SQL Server Reporting Services
12 354 (1.59%) SQL Server 2014
13 339 (1.52%) RDBMS
14 321 (1.44%) Redis
15 257 (1.16%) Oracle Database
16 195 (0.88%) Apache Cassandra
17 193 (0.87%) Hadoop
18 144 (0.65%) SQL Server 2005
19 115 (0.52%) SQL Server Analysis Services
20 110 (0.49%) Azure SQL Database
Development Applications
1 3818 (17.17%) Git (software)
2 1439 (6.47%) Visual Studio
3 1297 (5.83%) Team Foundation Server
4 1287 (5.79%) Subversion
5 1068 (4.80%) Grunt
6 1058 (4.76%) gulp
7 867 (3.90%) Jenkins
8 729 (3.28%) JIRA
9 667 (3.00%) Selenium
10 564 (2.54%) NUnit
11 551 (2.48%) Jasmine
12 510 (2.29%) Maven
13 431 (1.94%) TeamCity
14 387 (1.74%) JUnit
15 308 (1.38%) webpack
16 273 (1.23%) Bower
17 265 (1.19%) Karma Test Runner
18 263 (1.18%) Mocha
19 209 (0.94%) Cucumber
20 199 (0.89%) Moq
General
1 3207 (14.42%) Finance
2 1551 (6.97%) Marketing
3 971 (4.37%) Retail
4 814 (3.66%) Banking
5 679 (3.05%) Games
6 641 (2.88%) Advertising
7 612 (2.75%) Telecoms
8 289 (1.30%) Publishing
9 211 (0.95%) Manufacturing
10 182 (0.82%) Legal
11 172 (0.77%) Law
12 133 (0.60%) Electronics
13 120 (0.54%) Automotive
14 119 (0.54%) Investment Banking
15 94 (0.42%) Multimedia
16 90 (0.40%) Back Office
17 88 (0.40%) Military
18 86 (0.39%) Music Industry
19 73 (0.33%) Financial Institution
20 69 (0.31%) Pharmaceutical
Job Titles
1 18484 (83.12%) Developer
2 5136 (23.09%) .NET Developer
3 3989 (17.94%) C# Developer
4 3489 (15.69%) Front End Developer (Client-Side Developer)
5 3220 (14.48%) JavaScript Developer
6 3099 (13.93%) Senior Developer
7 3066 (13.79%) C# .NET Developer
8 2955 (13.29%) Web Developer
9 2433 (10.94%) PHP Developer
10 2181 (9.81%) HTML Developer
11 1955 (8.79%) ASP.NET Developer
12 1773 (7.97%) HTML CSS Developer
13 1742 (7.83%) Software Developer
14 1636 (7.36%) C# ASP.NET Developer
15 1504 (6.76%) Java Developer
16 1413 (6.35%) ASP.NET MVC Developer
17 1143 (5.14%) Angular Developer
18 1079 (4.85%) Junior
19 947 (4.26%) Junior Developer
20 935 (4.20%) Lead Developer
Libraries, Frameworks & Software Standards
1 21137 (95.04%) HTML
2 9055 (40.72%) .NET
3 8514 (38.28%) jQuery
4 8249 (37.09%) HTML5
5 7042 (31.67%) AngularJS
6 6612 (29.73%) ASP.NET
7 5861 (26.35%) CSS3
8 3599 (16.18%) ASP.NET MVC
9 3096 (13.92%) Web Services
10 2853 (12.83%) XML
11 2742 (12.33%) Node.js
12 2562 (11.52%) Ajax
13 2403 (10.81%) Sass
14 2342 (10.53%) React
15 2254 (10.14%) Twitter Bootstrap
16 2225 (10.00%) .NET Framework
17 1943 (8.74%) JSON
18 1766 (7.94%) REST
19 1670 (7.51%) WCF
20 1656 (7.45%) ASP.NET Web API
Miscellaneous
1 3103 (13.95%) User Experience
2 1804 (8.11%) Computer Science
3 1143 (5.14%) Mobile App
4 960 (4.32%) Analytical Skills
5 466 (2.10%) Visualisation
6 445 (2.00%) Fintech
7 376 (1.69%) iPad
8 345 (1.55%) Enterprise Software
9 272 (1.22%) Social Media
10 267 (1.20%) Mathematics
11 220 (0.99%) W3C
12 174 (0.78%) N-Tier
13 169 (0.76%) Client/Server
14 159 (0.71%) Data Structures
15 154 (0.69%) Algorithms
15 154 (0.69%) Inversion of Control
16 151 (0.68%) Digital Media
17 150 (0.67%) Management Information System
18 143 (0.64%) Graphic Design
19 113 (0.51%) Online Games
Operating Systems
1 2089 (9.39%) Linux
2 1203 (5.41%) Windows
3 793 (3.57%) Android
4 666 (2.99%) Apple iOS
5 487 (2.19%) Unix
6 270 (1.21%) Windows Server
7 126 (0.57%) Ubuntu
8 99 (0.45%) Windows Server 2012
9 65 (0.29%) Windows Server 2008
10 42 (0.19%) CentOS
11 41 (0.18%) Debian
12 40 (0.18%) Mac OS X
13 38 (0.17%) Windows Phone
14 32 (0.14%) Mac OS
15 30 (0.13%) Windows 7
16 29 (0.13%) Solaris
17 23 (0.10%) Windows 8
18 20 (0.090%) AIX
18 20 (0.090%) Windows 10
19 15 (0.067%) Red Hat Enterprise Linux
Processes & Methodologies
1 9470 (42.58%) Agile Software Development
2 7719 (34.71%) MVC
3 6297 (28.32%) Web Development
4 4507 (20.27%) Front End Development
5 3712 (16.69%) TDD
6 3694 (16.61%) OO
7 3369 (15.15%) Scrum
8 2608 (11.73%) Software Engineering
9 2201 (9.90%) E-Commerce
10 1775 (7.98%) OOP
11 1551 (6.97%) SDLC
12 1529 (6.88%) Continuous Integration
13 1435 (6.45%) Unit Testing
14 1377 (6.19%) Responsive Web Design
15 1313 (5.90%) BDD
16 1096 (4.93%) Mentoring
17 1010 (4.54%) Web Design
18 912 (4.10%) Analytics
19 841 (3.78%) Open Source
20 787 (3.54%) SOA
Programming Languages
1 19091 (85.84%) JavaScript
2 8714 (39.18%) C#
3 5967 (26.83%) SQL
4 4661 (20.96%) PHP
5 4069 (18.30%) Java
6 1468 (6.60%) Python
7 1359 (6.11%) T-SQL
8 1044 (4.69%) VB.NET
9 778 (3.50%) Ruby
10 737 (3.31%) C++
11 568 (2.55%) TypeScript
12 480 (2.16%) ES6
13 373 (1.68%) C
14 299 (1.34%) Scala
15 291 (1.31%) PowerShell
16 276 (1.24%) Perl
16 276 (1.24%) VB
17 273 (1.23%) PL/SQL
18 158 (0.71%) Groovy
19 154 (0.69%) XPath
Qualifications
1 2921 (13.13%) Degree
2 332 (1.49%) Security Cleared
3 187 (0.84%) Microsoft Certification
4 168 (0.76%) SC Cleared
5 69 (0.31%) PMI Certification
6 62 (0.28%) DV Cleared
7 61 (0.27%) ISTQB
8 49 (0.22%) PhD
9 44 (0.20%) MCSD
10 29 (0.13%) ISEB
11 26 (0.12%) MCP
12 19 (0.085%) A+ Certification
12 19 (0.085%) ISTQB Foundation Certification
13 18 (0.081%) HND
13 18 (0.081%) MCTS
14 17 (0.076%) Sun Certification
15 16 (0.072%) BC Cleared
16 15 (0.067%) MCAD
17 12 (0.054%) Analytics IQ
18 11 (0.049%) Postgraduate
Quality Assurance & Compliance
1 833 (3.75%) QA
2 98 (0.44%) WAI
3 63 (0.28%) WCAG
4 58 (0.26%) SLA
5 37 (0.17%) ISO 9001
6 32 (0.14%) PCI DSS
7 15 (0.067%) GCP
8 10 (0.045%) Data Quality
9 9 (0.040%) ISO/IEC 27001
10 8 (0.036%) SDET
11 5 (0.022%) HL7
12 4 (0.018%) GAAP
12 4 (0.018%) MiFID
13 3 (0.013%) Actionable Recommendations
13 3 (0.013%) COBIT
13 3 (0.013%) ISO 9000
14 2 (0.009%) Basel III
14 2 (0.009%) CRD IV
14 2 (0.009%) Disclosure Scotland
14 2 (0.009%) PA-DSS
System Software
1 372 (1.67%) Docker
2 126 (0.57%) VMware Infrastructure
3 97 (0.44%) Active Directory
4 67 (0.30%) Hyper-V
5 52 (0.23%) Varnish
6 19 (0.085%) Virtual Machines
7 16 (0.072%) Firmware
8 11 (0.049%) Apache ZooKeeper
9 10 (0.045%) HDFS
9 10 (0.045%) Virtual Servers
10 9 (0.040%) LXC
11 8 (0.036%) VirtualBox
12 7 (0.031%) KVM
13 6 (0.027%) XenApp
14 4 (0.018%) Veritas Cluster Server
14 4 (0.018%) Xen
14 4 (0.018%) XenServer
15 2 (0.009%) Terminal Services
15 2 (0.009%) vSphere
16 1 (0.004%) Apache Flume
Systems Management
1 187 (0.84%) Puppet
2 179 (0.80%) Opscode Chef
3 152 (0.68%) Ansible
4 22 (0.099%) Kibana
4 22 (0.099%) Kubernetes
5 17 (0.076%) Capistrano
5 17 (0.076%) cPanel
6 11 (0.049%) Control-M
7 10 (0.045%) HAProxy
7 10 (0.045%) logstash
7 10 (0.045%) Microsoft Clustering
7 10 (0.045%) Piwik
8 9 (0.040%) Salt
9 8 (0.036%) Oracle Enterprise Manager
10 6 (0.027%) Systems Management Server (SMS)
10 6 (0.027%) ZABBIX
11 5 (0.022%) HP Quality Center
11 5 (0.022%) Nagios
11 5 (0.022%) TeamSite
12 4 (0.018%) Cisco UCCE
Vendors
1 3029 (13.62%) Microsoft
2 1165 (5.24%) Oracle
3 969 (4.36%) Adobe
4 659 (2.96%) Google
5 576 (2.59%) Zend
6 305 (1.37%) Sitecore
7 277 (1.25%) Xamarin
8 228 (1.03%) EPiServer
9 210 (0.94%) Salesforce.com
10 172 (0.77%) Twitter
11 164 (0.74%) IBM
12 145 (0.65%) VMware
13 133 (0.60%) SAP
14 132 (0.59%) Facebook
15 111 (0.50%) hybris
16 91 (0.41%) Apple
17 87 (0.39%) Atlassian
18 79 (0.36%) ServiceNow
19 62 (0.28%) LexisNexis
20 44 (0.20%) Red Hat
Southampton, Hampshire
Computer People
Salary: £40000.00 - £55000.00 per annum
Posted: Yesterday
East London
onezeero.
Salary: £28000 - £35000 per annum + excellent benefits
Posted: Yesterday
Suffolk
Pure Resourcing Solutions
Salary: £25000 - £30000 per annum
Posted: Yesterday
Edinburgh, Midlothian
Net Talent
Posted: Yesterday
Midlands
Senitor Associates
Salary: £30000 - £40000 per annum + Excellent Benefits
Posted: Yesterday
City, London
Harrington Starr
Salary: £50000 - £70000 per annum + Benefits + Bonus
Posted: 22 hours ago
Lincolnshire
Searchability
Salary: £25000 - £30000 per annum + Benefits
Posted: 18 hours ago
Aylesbury, Buckinghamshire
Employ Solutions
Salary: From £35,000 to £40,000 per annum
Posted: Yesterday
Newbury, Berkshire
Freshtechit
Salary: From £35,000 to £55,000 per annum
Posted: Yesterday
Central London / West End
Initi8 Recruitment
Salary: £65000 - £75000 Per Annum
Posted: 19 hours ago
London
Harrington Starr
Salary: £35000 - £45000 per annum + bonus + benefits
Posted: 13 hours ago
City, London
Harrington Starr
Salary: £50000 - £60000 per annum + Bonus + Benefits
Posted: 22 hours ago
Wales
Energize Recruitment Solutions Ltd
Salary: £30000 - £35000 per annum + Benefits
Posted: Yesterday
Leicester, Leicestershire
Senitor Associates
Salary: £30000 - £40000 per annum + Excellent Benefits Package
Posted: Yesterday
City, London
Senitor Associates
Salary: £35000 - £45000 per annum + Excellent Benefits
Posted: Yesterday
Midlands
Senitor Associates
Salary: £25000 - £35000 per annum + Excellent Benefits
Posted: Yesterday
London
ReThink Recruitment
Salary: £45000.00 - £50000.00 per annum
Posted: Yesterday
Hull, North Humberside
Searchability
Salary: £40000 - £50000 per annum + Benefits
Posted: Yesterday
London
Harrington Starr
Salary: £75000 - £85000 per annum + benefits + share options
Posted: 14 hours ago
Portsmouth, Hampshire
Spectrum IT Recruitment (South) Ltd
Salary: £35000 - £45000 per annum + Benefits
Posted: Yesterday
London
Tiro Partners
Salary: £55000.00 - £70000.00 per annum
Posted: Yesterday
London
Oho Group Ltd.
Salary: £40000 - £65000 per annum, Benefits Share Options
Posted: Yesterday
Crawley, West Sussex
Search Consultancy
Salary: £0.00 per annum
Posted: Yesterday
Halifax, West Yorkshire
Senitor Associates
Salary: £30000 - £35000 per annum + Benefits
Posted: Yesterday
London
Tiro Partners
Salary: £50000.00 - £60000.00 per annum
Posted: Yesterday
Central London / West End
Complete Tech Limited
Salary: Up to £42,000 per annum + great benefits including healthcare, Bupa, p
Posted: 15 hours ago
Milton Keynes, Buckinghamshire
Interact Consulting
Salary: 35-47k
Posted: Yesterday
Cambridge, Cambridgeshire
The One Group
Salary: £35k - 40k per year
Posted: 2 days ago
West Sussex
Sanderson
Salary: £40000 - £45000 per annum
Posted: Yesterday
Fareham, Hampshire
Spectrum IT Recruitment (South) Ltd
Salary: £45000 - £50000 per annum + Excellent Benefits
Posted: Yesterday