The following table provides summary statistics for permanent job vacancies with a requirement for HTML5 skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited HTML5 over the 3 months to 25 June 2017 with a comparison to the same period in the previous 2 years.

HTML5
UK
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 46 39 41
Rank change year-on-year -7 +2  
Permanent jobs citing HTML5 4961 5566 6269
As % of all permanent IT jobs advertised in the UK 5.63% 5.73% 5.66%
As % of the Libraries, Frameworks & Software Standards category 13.74% 14.74% 14.88%
Number of salaries quoted 4354 4868 5260
Median salary £45,000 £45,000 £42,500
Median salary % change year-on-year - +5.88%  
90% offered a salary of more than £30,000 £30,000 £29,500
10% offered a salary of more than £70,000 £67,500 £63,500
UK excluding London median salary £40,000 £40,000 £40,000

HTML5 is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
UK
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 36096 37770 42141
As % of all permanent IT job vacancies advertised in the UK 40.98% 38.91% 38.07%
Number of salaries quoted 30323 32819 36049
Median salary £47,000 £45,000 £45,000
Median salary % change year-on-year +4.44% -  
90% offered a salary of more than £32,500 £31,000 £30,000
10% offered a salary of more than £70,000 £65,000 £70,000
UK excluding London median salary £42,500 £40,000 £40,000
% change year-on-year +6.25% -  

HTML5
Job Vacancy Trend

The job posting trend of jobs advertised citing HTML5 as a proportion of all permanent or contract IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for HTML5 in the UK

HTML5
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing HTML5.

Salary trend for HTML5 in the UK

HTML5
Salary Histogram

The salary distribution of IT jobs citing HTML5 over the 3 months to 25 June 2017.

Salary histogram for HTML5 in the UK

HTML5
Top 30 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing HTML5 within the UK over the 3 months to 25 June 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 -5 4658 £45,000 - 816
London -27 1846 £60,000 +9.09% 287
South East +8 684 £40,000 - 148
North West +10 477 £40,000 +6.66% 103
East of England +7 371 £42,500 - 56
West Midlands +2 352 £36,000 +14.28% 54
South West -16 324 £40,000 - 53
Yorkshire +9 320 £37,500 -6.25% 57
Manchester +15 318 £40,000 - 59
City of London -8 235 £60,000 - 75
East Midlands +25 230 £40,000 +6.66% 48
Cambridgeshire +9 162 £40,000 -11.11% 18
Bristol -4 158 £42,500 -3.40% 22
West Yorkshire +3 156 £37,500 -6.25% 35
Scotland -16 139 £37,500 -14.77% 20
Hampshire +7 134 £44,000 +22.22% 38
Hertfordshire +7 115 £50,000 +12.35% 9
Berkshire +6 114 £40,000 -4.19% 19
Cambridge 0 104 £37,500 -11.76% 8
Oxfordshire +30 100 £40,000 -11.11% 19
Nottinghamshire +20 98 £40,000 +6.66% 20
Birmingham -3 98 £37,500 +15.38% 11
Nottingham +27 88 £42,500 +6.25% 16
West Sussex +33 86 £40,000 +28.00% 17
Surrey -13 81 £40,000 - 20
Leeds -23 80 £35,000 -6.66% 22
North Yorkshire +5 75 £40,000 -5.88% 8
Oxford +24 74 £40,000 -11.11% 9
Glasgow +1 73 £36,375 -9.06% 10
Cheshire -11 65 £37,500 +7.14% 24

For the 6 months to 25 June 2017, IT jobs citing HTML5 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 HTML5.

1 9616 (100.00%) HTML
2 8276 (86.06%) CSS
3 8044 (83.65%) JavaScript
4 5365 (55.79%) CSS3
5 4632 (48.17%) Agile Software Development
6 4564 (47.46%) AngularJS
7 3684 (38.31%) jQuery
8 3382 (35.17%) C#
9 3349 (34.83%) .NET
10 3136 (32.61%) MVC
11 2525 (26.26%) Front End Development
12 2499 (25.99%) Web Development
13 2488 (25.87%) ASP.NET
14 2253 (23.43%) SQL
15 2204 (22.92%) TDD
16 2191 (22.78%) Git (software)
17 2123 (22.08%) SQL Server
18 1938 (20.15%) PHP
19 1911 (19.87%) Scrum
20 1886 (19.61%) Node.js
21 1880 (19.55%) Java
22 1773 (18.44%) React
23 1759 (18.29%) OO
24 1702 (17.70%) User Experience
25 1539 (16.00%) ASP.NET MVC
26 1481 (15.40%) Sass
26 1481 (15.40%) Finance
27 1457 (15.15%) Twitter Bootstrap
28 1377 (14.32%) Web Services
29 1327 (13.80%) MySQL

HTML5
Co-occurring 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
1 778 (8.09%) CMS
2 481 (5.00%) WordPress
3 290 (3.02%) Apache
4 213 (2.22%) SharePoint
5 207 (2.15%) Drupal
6 193 (2.01%) Elasticsearch
7 191 (1.99%) IIS
8 173 (1.80%) Umbraco
9 159 (1.65%) nginx
10 142 (1.48%) Apache Solr
11 124 (1.29%) WebSphere
12 123 (1.28%) EPiServer
13 108 (1.12%) Tomcat
14 93 (0.97%) Confluence
15 70 (0.73%) SharePoint 2013
16 67 (0.70%) Apache Spark
17 66 (0.69%) Sitecore CMS
18 62 (0.64%) NServiceBus
19 61 (0.63%) JBoss
20 59 (0.61%) Adobe Experience Manager
Applications
1 561 (5.83%) Photoshop
2 247 (2.57%) Adobe Illustrator
3 154 (1.60%) Adobe Creative Suite
4 87 (0.90%) InVision
5 83 (0.86%) Microsoft Office
6 51 (0.53%) Microsoft Excel
7 35 (0.36%) InDesign
8 33 (0.34%) Fireworks
8 33 (0.34%) MS Visio
9 18 (0.19%) Adobe Premiere
10 17 (0.18%) UXPin
11 15 (0.16%) InfoPath
12 14 (0.15%) GIMP
13 12 (0.12%) Adobe After Effects
14 10 (0.10%) Microsoft PowerPoint
15 8 (0.083%) Adobe Captivate
15 8 (0.083%) OmniGraffle
16 7 (0.073%) Chatbot
17 4 (0.042%) Moqups
17 4 (0.042%) Spreadsheet
Business Applications
1 191 (1.99%) Magento
2 87 (0.90%) SAP Oil and Gas
3 28 (0.29%) Dynamics CRM
3 28 (0.29%) Payment Gateway
4 27 (0.28%) Eloqua
5 14 (0.15%) Shopify
6 10 (0.10%) Movex
7 9 (0.094%) SessionCam
7 9 (0.094%) Social Studio
8 8 (0.083%) Dynamics AX
9 5 (0.052%) RMDS
9 5 (0.052%) WebTrends
10 4 (0.042%) Visualfiles
11 3 (0.031%) Odoo
11 3 (0.031%) Oracle BPM
12 2 (0.021%) OpenCart
12 2 (0.021%) osCommerce
12 2 (0.021%) SAP CRM
12 2 (0.021%) SAP Hybris
12 2 (0.021%) Scribe Insight
Cloud Services
1 701 (7.29%) Microsoft Azure
2 691 (7.19%) Amazon AWS
3 370 (3.85%) SaaS
4 316 (3.29%) GitHub
5 121 (1.26%) PaaS
6 105 (1.09%) Google Analytics
7 93 (0.97%) IaaS
8 68 (0.71%) Office 365
9 65 (0.68%) Amazon EC2
10 61 (0.63%) Cloud Computing
11 55 (0.57%) Amazon S3
12 50 (0.52%) Google Cloud Platform
13 49 (0.51%) AWS Elastic Beanstalk
14 47 (0.49%) Adobe Analytics
15 21 (0.22%) Adobe Creative Cloud
16 20 (0.21%) Azure Machine Learning
17 17 (0.18%) AWS Lambda
18 13 (0.14%) Amazon SQS
19 12 (0.12%) Cloudflare
19 12 (0.12%) Heroku
Communications & Networking
1 291 (3.03%) HTTP
2 246 (2.56%) Internet
3 72 (0.75%) Intranet
4 53 (0.55%) SSL
5 43 (0.45%) TCP/IP
6 37 (0.38%) DNS
7 23 (0.24%) Broadband
8 19 (0.20%) SSH
9 17 (0.18%) Wireless
10 15 (0.16%) Skype
11 13 (0.14%) Extranet
12 11 (0.11%) DVB
13 9 (0.094%) ATM
13 9 (0.094%) DLNA
13 9 (0.094%) DOCSIS
13 9 (0.094%) HbbTV
13 9 (0.094%) SMS
14 8 (0.083%) Network Security
15 7 (0.073%) HTTPS
15 7 (0.073%) VoIP
Database & Business Intelligence
1 2123 (22.08%) SQL Server
2 1327 (13.80%) MySQL
3 697 (7.25%) MongoDB
4 634 (6.59%) NoSQL
5 417 (4.34%) Relational Database
6 238 (2.48%) SQL Server 2014
7 230 (2.39%) SQL Server Reporting Services
8 224 (2.33%) SQL Server Integration Services
9 210 (2.18%) Big Data
10 193 (2.01%) SQL Server 2008
11 182 (1.89%) Apache Cassandra
12 158 (1.64%) PostgreSQL
13 152 (1.58%) Redis
14 133 (1.38%) RavenDB
15 123 (1.28%) RDBMS
16 114 (1.19%) Hadoop
17 107 (1.11%) SQL Server 2012
18 92 (0.96%) Blockchain
19 78 (0.81%) SQL Server Analysis Services
20 77 (0.80%) SQL Server 2016
Development Applications
1 2191 (22.78%) Git (software)
2 742 (7.72%) gulp
3 724 (7.53%) Subversion
4 640 (6.66%) Visual Studio
5 576 (5.99%) Grunt
6 434 (4.51%) JIRA
7 426 (4.43%) Selenium
8 424 (4.41%) Team Foundation Server
9 421 (4.38%) Jasmine
10 399 (4.15%) NUnit
11 379 (3.94%) Jenkins
12 315 (3.28%) webpack
13 262 (2.72%) Karma Test Runner
14 250 (2.60%) TeamCity
15 198 (2.06%) Mocha
16 194 (2.02%) Maven
17 188 (1.96%) Rhino Mocks
18 145 (1.51%) JUnit
19 138 (1.44%) Moq
20 131 (1.36%) SpecFlow
General
1 1481 (15.40%) Finance
2 697 (7.25%) Marketing
3 468 (4.87%) Banking
4 457 (4.75%) Retail
5 451 (4.69%) Games
6 239 (2.49%) Telecoms
7 213 (2.22%) Advertising
8 211 (2.19%) Electronics
9 151 (1.57%) Manufacturing
10 126 (1.31%) Legal
11 111 (1.15%) Investment Banking
12 92 (0.96%) Publishing
13 75 (0.78%) Law
14 73 (0.76%) Automotive
15 69 (0.72%) Front Office
16 68 (0.71%) Back Office
17 54 (0.56%) Financial Institution
18 51 (0.53%) Multimedia
19 48 (0.50%) Music Industry
20 31 (0.32%) Pharmaceutical
Job Titles
1 8193 (85.20%) Developer
2 1946 (20.24%) Front End Developer (Client-Side Developer)
3 1814 (18.86%) .NET Developer
4 1549 (16.11%) JavaScript Developer
5 1477 (15.36%) Senior Developer
6 1439 (14.96%) C# Developer
7 1293 (13.45%) Web Developer
8 1045 (10.87%) C# .NET Developer
9 1044 (10.86%) HTML Developer
10 875 (9.10%) PHP Developer
11 760 (7.90%) HTML CSS Developer
12 747 (7.77%) Software Developer
13 723 (7.52%) ASP.NET Developer
14 641 (6.67%) Java Developer
15 628 (6.53%) C# ASP.NET Developer
16 595 (6.19%) Full Stack Developer
17 594 (6.18%) Angular Developer
18 441 (4.59%) ASP.NET MVC Developer
19 392 (4.08%) Lead Developer
20 375 (3.90%) Software Engineer
Libraries, Frameworks & Software Standards
1 9616 (100.00%) HTML
2 8276 (86.06%) CSS
3 5365 (55.79%) CSS3
4 4564 (47.46%) AngularJS
5 3684 (38.31%) jQuery
6 3349 (34.83%) .NET
7 2488 (25.87%) ASP.NET
8 1886 (19.61%) Node.js
9 1773 (18.44%) React
10 1539 (16.00%) ASP.NET MVC
11 1481 (15.40%) Sass
12 1457 (15.15%) Twitter Bootstrap
13 1377 (14.32%) Web Services
14 1158 (12.04%) REST
15 1133 (11.78%) Ajax
16 1014 (10.54%) JSON
17 999 (10.39%) ASP.NET Web API
18 959 (9.97%) .NET Framework
19 870 (9.05%) XML
20 842 (8.76%) LESS
Miscellaneous
1 1702 (17.70%) User Experience
2 779 (8.10%) Computer Science
3 747 (7.77%) Mobile App
4 694 (7.22%) Greenfield Project
5 443 (4.61%) Analytical Skills
6 357 (3.71%) Fintech
7 218 (2.27%) Social Media
8 183 (1.90%) Enterprise Software
9 145 (1.51%) iPad
10 140 (1.46%) Linux Command Line
11 126 (1.31%) e-Learning
12 89 (0.93%) W3C
13 78 (0.81%) Algorithms
13 78 (0.81%) Data Structures
14 77 (0.80%) Client/Server
15 68 (0.71%) Digital Media
15 68 (0.71%) Graphic Design
16 66 (0.69%) Online Games
17 58 (0.60%) Hedge funds
17 58 (0.60%) Social Network
Operating Systems
1 953 (9.91%) Linux
2 566 (5.89%) Android
3 529 (5.50%) Apple iOS
4 428 (4.45%) Windows
5 161 (1.67%) Unix
6 67 (0.70%) Windows Server
7 60 (0.62%) Ubuntu
8 34 (0.35%) AIX
9 30 (0.31%) Mac OS X
10 26 (0.27%) Windows Server 2012
11 24 (0.25%) CentOS
12 21 (0.22%) Solaris
13 19 (0.20%) Windows Phone
14 17 (0.18%) Windows Mobile
15 15 (0.16%) Debian
15 15 (0.16%) Windows Server 2008
16 9 (0.094%) Windows 10
17 7 (0.073%) Mac OS
17 7 (0.073%) VMS
18 5 (0.052%) Windows 7
Processes & Methodologies
1 4632 (48.17%) Agile Software Development
2 3136 (32.61%) MVC
3 2525 (26.26%) Front End Development
4 2499 (25.99%) Web Development
5 2204 (22.92%) TDD
6 1911 (19.87%) Scrum
7 1759 (18.29%) OO
8 1255 (13.05%) Software Engineering
9 956 (9.94%) Continuous Integration
10 935 (9.72%) E-Commerce
11 917 (9.54%) Responsive Web Design
12 906 (9.42%) Unit Testing
13 801 (8.33%) BDD
14 756 (7.86%) OOP
15 744 (7.74%) Test Automation
16 667 (6.94%) SDLC
17 579 (6.02%) Open Source
18 519 (5.40%) DevOps
19 494 (5.14%) Analytics
20 479 (4.98%) Web Design
Programming Languages
1 8044 (83.65%) JavaScript
2 3382 (35.17%) C#
3 2253 (23.43%) SQL
4 1938 (20.15%) PHP
5 1880 (19.55%) Java
6 576 (5.99%) ES6
7 548 (5.70%) T-SQL
8 544 (5.66%) Python
9 421 (4.38%) TypeScript
10 308 (3.20%) Ruby
11 287 (2.98%) VB.NET
12 245 (2.55%) C++
13 191 (1.99%) Objective-C
14 189 (1.97%) Scala
15 145 (1.51%) C
16 129 (1.34%) Apple Swift
17 124 (1.29%) VB
18 116 (1.21%) Groovy
19 94 (0.98%) ECMAScript
20 93 (0.97%) Perl
Qualifications
1 1223 (12.72%) Degree
2 409 (4.25%) Computer Science Degree
3 131 (1.36%) Security Cleared
4 99 (1.03%) Microsoft Certification
5 69 (0.72%) SC Cleared
6 56 (0.58%) Numerate Degree
7 38 (0.40%) PhD
8 35 (0.36%) PMI Certification
9 33 (0.34%) MCP
10 24 (0.25%) DV Cleared
11 19 (0.20%) DBS Check
12 18 (0.19%) Master's Degree
13 12 (0.12%) APMP
13 12 (0.12%) ISEB
13 12 (0.12%) MBA
14 11 (0.11%) MCSD
14 11 (0.11%) MCTS
15 7 (0.073%) ISTQB
15 7 (0.073%) MCPD
15 7 (0.073%) Sun Certification
Quality Assurance & Compliance
1 408 (4.24%) QA
2 26 (0.27%) ISO 9001
3 21 (0.22%) ISO 14001
3 21 (0.22%) SLA
3 21 (0.22%) WCAG
4 13 (0.14%) MiFID
5 10 (0.10%) WAI
6 8 (0.083%) PCI DSS
7 6 (0.062%) Data Quality
7 6 (0.062%) Section 508
8 4 (0.042%) EMIR
8 4 (0.042%) GCP
9 3 (0.031%) HIPAA
9 3 (0.031%) ISO/IEC 27001
10 2 (0.021%) HL7
10 2 (0.021%) ISO/IEC 20000
10 2 (0.021%) PMO
11 1 (0.010%) Cyber Essentials
11 1 (0.010%) DICOM
11 1 (0.010%) Disclosure Scotland
System Software
1 316 (3.29%) Docker
2 31 (0.32%) VMware Infrastructure
3 22 (0.23%) Active Directory
4 20 (0.21%) Hyper-V
5 17 (0.18%) Virtual Machines
6 13 (0.14%) Varnish
7 9 (0.094%) Firmware
8 4 (0.042%) HDFS
8 4 (0.042%) VirtualBox
9 2 (0.021%) Tivoli Workload Scheduler
10 1 (0.010%) Apache ZooKeeper
10 1 (0.010%) KVM
10 1 (0.010%) LXC
10 1 (0.010%) Slurm Workload Manager
10 1 (0.010%) Xen
Systems Management
1 87 (0.90%) Puppet
2 80 (0.83%) Ansible
3 79 (0.82%) Opscode Chef
4 64 (0.67%) Kubernetes
5 16 (0.17%) cPanel
6 15 (0.16%) Kibana
7 14 (0.15%) ZABBIX
8 12 (0.12%) Terraform
9 11 (0.11%) Salt
9 11 (0.11%) Systems Management Server (SMS)
10 10 (0.10%) logstash
11 7 (0.073%) Nagios
12 6 (0.062%) Capistrano
13 5 (0.052%) Business Desktop Deployment
13 5 (0.052%) HAProxy
13 5 (0.052%) Prometheus
14 4 (0.042%) HockeyApp
15 3 (0.031%) CloudForms
15 3 (0.031%) Control-M
15 3 (0.031%) Grafana
Vendors
1 1247 (12.97%) Microsoft
2 463 (4.81%) Oracle
3 455 (4.73%) Adobe
4 275 (2.86%) Google
5 230 (2.39%) Xamarin
6 229 (2.38%) Zend
7 142 (1.48%) SAP
8 126 (1.31%) Sitecore
9 103 (1.07%) IBM
10 100 (1.04%) Salesforce.com
11 91 (0.95%) hybris
12 83 (0.86%) Demandware
13 81 (0.84%) ATG
14 66 (0.69%) Apple
15 60 (0.62%) Twitter
16 59 (0.61%) Atlassian
16 59 (0.61%) Facebook
17 38 (0.40%) VMware
18 32 (0.33%) Red Hat
19 28 (0.29%) New Relic
South East London
Stepstone
Salary: Competitive Salary plus generous benefits
Posted: 2 hours ago
London
Harrington Starr
Salary: £60000 - £70000 per annum + bonus + benefits
Posted: 7 hours ago
Newport Pagnell, Buckinghamshire
Understanding Recruitment
Salary: £35000.00 - £45000.00 per annum + Benefits
Posted: 2 hours ago
London
Harrington Starr
Salary: £60000 - £80000 per annum + bonus + benefits
Posted: 7 hours ago
London
Harrington Starr
Salary: £60000 - £75000 per annum + bonus + benefits
Posted: 8 hours ago
City, London
Understanding Recruitment
Salary: £45000 - £65000 per annum + benefits
Posted: 2 hours ago
Berkshire
Spargonet Consulting Plc
Salary: £65000 - £75000 per annum, Benefits Excellent Company Benefits
Posted: 1 hour ago
London
Talent Point Ltd
Salary: £55000.00 - £75000.00 per annum + Benefits
Posted: Yesterday
Chichester, West Sussex
Exposed Solutions
Salary: £40000 - £45000 per annum
Posted: 4 hours ago
Egham, Surrey
Spargonet Consulting Plc
Salary: £55000 - £65000 per annum, Benefits Pension, Life, Health and 25 days
Posted: 1 hour ago
Peterborough, Cambridgeshire
Understanding Recruitment
Salary: £45000 - £54000 per annum + benefits
Posted: 2 hours ago
London
Amicus Recruitment Limited
Salary: £70000.00 - £120000.00 per annum + Pension, Bonus
Posted: Yesterday
Brighton, East Sussex
ARC IT Recruitment Ltd
Salary: £35000 - £45000 per annum + Benefits
Posted: 2 days ago
Haywards Heath, West Sussex
ARC IT Recruitment Ltd
Salary: £30000 - £40000 per annum + Benefits
Posted: 2 days ago
Leicester, Leicestershire
Pro-Quest Resourcing Ltd
Salary: £50000 - £60000 Per Annum + benefits
Posted: 2 days ago
Leeds, West Yorkshire
Oscar
Salary: £35000 - £40000 per annum + and additional benefits
Posted: Yesterday
London
Capita Resourcing - IT Resourcing
Salary: £0.00 per annum
Posted: 2 days ago
Haywards Heath, West Sussex
ARC IT Recruitment Ltd
Salary: £30000 - £40000 per annum + Benefits
Posted: 2 days ago
City, London
Harrington Starr
Salary: £100000 - £140000 per annum + bonus + benefits
Posted: Yesterday
Birmingham, West Midlands (County)
ReStart Recruitment
Salary: From £25,000 to £33,000 per annum plus benefits
Posted: 2 days ago
London
Capita Resourcing - IT Resourcing
Salary: £0.00 per annum
Posted: 2 days ago
Hull, North Humberside
Searchability
Salary: £40000 - £50000 per annum + Benefits
Posted: Yesterday
Stockport, Cheshire
Oscar
Salary: £20000 - £35000 per annum + and additional benefits
Posted: Yesterday
London
Harrington Starr
Salary: £60000 - £75000 per annum + bonus + benefits
Posted: Yesterday
Bury, Lancashire
Oscar
Salary: £20000 - £30000 per annum + and additional benefits
Posted: Yesterday
London
Harrington Starr
Salary: £75000 - £85000 per annum + benefits + share options
Posted: Yesterday
Macclesfield, Cheshire
Search Consultancy
Salary: £50000 - £60000 per annum
Posted: 2 days ago
Doncaster, South Yorkshire
Oscar
Salary: £18000 - £24000 per annum + and additional benefits
Posted: Yesterday
Horsham, West Sussex
ARC IT Recruitment Ltd
Salary: Up to £45,000 PA
Posted: 2 days ago
Bath, Avon
Redrock Consulting Ltd
Salary: £40000.00 - £50000.00 per annum
Posted: Yesterday