The table below looks at the statistics for DNS skills in IT jobs advertised across the UK. Included is a guide to the salaries offered in IT jobs that have cited DNS over the 3 months to 26 February 2017 with a comparison to the same period over the previous 2 years.

3 months to
26 Feb 2017
Same period 2016 Same period 2015
Domain Name System (DNS)
UK
Rank 131 124 104
Rank change year-on-year
-7 -20
Permanent jobs citing DNS 1998 2657 3111
As % of all permanent IT jobs located in the UK 2.41% 2.59% 2.92%
As % of the Communications & Networking category 14.94% 15.13% 16.01%
Number of salaries quoted 1685 2192 2552
Median salary £42,500 £40,000 £40,000
Median salary % change year-on-year
+6.25% -
90% offered a salary of more than £26,000 £25,000 £25,000
10% offered a salary of more than £65,000 £60,000 £62,500
UK excluding London median salary £40,000 £37,500 £36,500
% change year-on-year
+6.66% +2.73%

The following table is for comparison with the above and provides statistics for the entire Communications & Networking category in permanent jobs advertised across the UK.

Communications & Networking Category
UK
Permanent IT job ads with a match in the
Communications & Networking category
13376 17559 19429
As % of all permanent IT jobs located in the UK 16.12% 17.14% 18.23%
Number of salaries quoted 10924 14578 15672
Median salary £45,000 £45,000 £45,000
90% offered a salary of more than £27,000 £27,500 £27,500
10% offered a salary of more than £68,000 £67,500 £65,000
UK excluding London median salary £40,000 £42,500 £40,000
% change year-on-year
-5.88% +6.25%

DNS
Jobs Demand Trend

The demand trend of job ads citing DNS as a proportion of all IT jobs with a match in the Communications & Networking category.

DNS Jobs Demand Trend in the UK

DNS
Salary Trend

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

DNS Salary Trend in the UK

DNS
Salary Histogram

This chart provides a salary histogram for IT jobs citing DNS over the 3 months to 26 February 2017 within the UK.

DNS Salary Histogram in the UK

DNS
Top 30 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing DNS within the UK over the 3 months to 26 February 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 -8 1896 £42,500 +6.25% 302
London +4 719 £52,500 +16.66% 114
South East -1 494 £45,000 +12.50% 67
City of London +53 168 £47,500 +5.55% 26
Yorkshire +16 159 £32,500 -13.94% 17
East of England -21 133 £41,500 +16.90% 19
Berkshire -7 127 £47,500 +15.85% 10
North West +7 117 £35,000 +25.00% 30
Surrey -5 100 £40,000 - 8
West Midlands +33 99 £35,000 -5.40% 23
West Yorkshire +17 97 £37,750 +0.30% 12
Manchester +13 95 £35,000 +25.00% 22
South West -43 93 £35,000 -11.21% 16
Leeds +21 81 £37,500 -11.76% 7
Oxfordshire +51 77 £50,000 +33.33% 9
East Midlands +27 71 £42,500 +6.25% 9
Hampshire -37 69 £45,000 +20.00% 13
Hertfordshire -30 60 £41,500 +10.66% 6
Reading -4 48 £47,500 +5.55% 5
Northamptonshire +26 43 £42,500 -5.55% 1
Cambridgeshire -7 42 £45,000 +1.12% 7
Kent +1 36 £42,500 +21.42% 3
Cambridge -11 34 £48,500 +8.98% 5
West Sussex +16 33 £40,000 -11.11% 4
Oxford +31 32 £50,000 +11.11% 2
North East +31 32 £30,000 - 7
Tyne and Wear +34 31 £30,000 +36.36% 7
Scotland -24 30 £45,000 +12.50% 6
Wiltshire -2 29 £35,000 -11.21% 3
Bristol -24 28 £40,000 +14.28% 4

DNS
Top 30 Related IT Skills

For the 6 months to 26 February 2017, IT jobs citing DNS 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 DNS.

1 2643 (60.88%) Windows
2 2573 (59.27%) DHCP
3 2343 (53.97%) Active Directory
4 1802 (41.51%) Firewall
5 1770 (40.77%) Microsoft
6 1744 (40.18%) VMware
7 1606 (37.00%) Windows Server
8 1494 (34.42%) TCP/IP
9 1422 (32.76%) Cisco
10 1322 (30.45%) Linux
11 1212 (27.92%) VMware Infrastructure
12 1067 (24.58%) Windows Server 2008
13 1064 (24.51%) LAN
14 1050 (24.19%) WAN
15 1013 (23.34%) Windows Server 2012
16 923 (21.26%) MS Exchange
17 905 (20.85%) Cisco Certification
18 887 (20.43%) VPN
19 860 (19.81%) ITIL
20 751 (17.30%) MS Excel
21 707 (16.29%) SQL Server
22 699 (16.10%) SQL
23 687 (15.83%) Hyper-V
24 668 (15.39%) Office 365
25 666 (15.34%) Data Centre
26 599 (13.80%) Citrix
27 579 (13.34%) IIS
28 565 (13.02%) Finance
29 550 (12.67%) CCNP
30 540 (12.44%) Microsoft Certification

DNS
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
1 923 (21.26%) MS Exchange
2 579 (13.34%) IIS
3 425 (9.79%) Exchange Server 2010
4 376 (8.66%) Apache
5 288 (6.63%) SharePoint
6 273 (6.29%) Skype for Business
7 238 (5.48%) Exchange Server 2013
8 222 (5.11%) Tomcat
9 127 (2.93%) Exchange Server 2007
10 109 (2.51%) Exchange Server 2003
11 104 (2.40%) nginx
12 90 (2.07%) JBoss
13 67 (1.54%) Blackberry Enterprise Server
14 57 (1.31%) Elasticsearch
15 42 (0.97%) SharePoint 2013
16 41 (0.94%) OpenStack
17 34 (0.78%) SharePoint 2010
18 26 (0.60%) CMS
19 25 (0.58%) WebLogic
20 23 (0.53%) IBM Notes
Applications
1 751 (17.30%) MS Excel
2 454 (10.46%) MS Office
3 69 (1.59%) MS Visio
4 34 (0.78%) MS PowerPoint
5 23 (0.53%) MS Project
6 16 (0.37%) Adobe Creative Suite
7 4 (0.092%) Pro/ENGINEER
7 4 (0.092%) PTC Creo
8 3 (0.069%) Mozilla Thunderbird
8 3 (0.069%) Photoshop
9 2 (0.046%) AutoCAD
9 2 (0.046%) InfoPath
9 2 (0.046%) Vectorworks
10 1 (0.023%) Autodesk Flame
10 1 (0.023%) Houdini
10 1 (0.023%) Maya
10 1 (0.023%) NUKE
Business Applications
1 26 (0.60%) Dynamics CRM
2 14 (0.32%) assyst
3 13 (0.30%) SAP Oil and Gas
4 12 (0.28%) Visualfiles
5 8 (0.18%) Dynamics AX
6 7 (0.16%) Remedy ITSM
7 6 (0.14%) SAP BPC
8 4 (0.092%) Dynamics NAV
8 4 (0.092%) Infor CRM
8 4 (0.092%) Magento
9 3 (0.069%) Fishtalk
9 3 (0.069%) Oracle Applications
9 3 (0.069%) Q-Pulse
9 3 (0.069%) SAP CRM
9 3 (0.069%) WebTrends
10 2 (0.046%) Dynamics GP
10 2 (0.046%) Oracle Retail
10 2 (0.046%) Payment Gateway
10 2 (0.046%) Salesforce.com CRM
10 2 (0.046%) Sentinel
Cloud Services
1 668 (15.39%) Office 365
2 516 (11.89%) Amazon AWS
3 440 (10.14%) Microsoft Azure
4 107 (2.46%) IaaS
5 100 (2.30%) PaaS
6 81 (1.87%) SaaS
7 73 (1.68%) Cloud Computing
8 41 (0.94%) Mimecast
9 39 (0.90%) Amazon EC2
9 39 (0.90%) Azure Active Directory
10 38 (0.88%) Google Cloud Platform
11 34 (0.78%) Amazon S3
12 33 (0.76%) Virtual Private Cloud
13 31 (0.71%) G Suite
14 23 (0.53%) AWS CloudFormation
15 20 (0.46%) IBM Cloud
15 20 (0.46%) SoftLayer
16 19 (0.44%) Amazon CloudWatch
17 14 (0.32%) Route 53
18 12 (0.28%) Heroku
Communications & Networking
1 2573 (59.27%) DHCP
2 1802 (41.51%) Firewall
3 1494 (34.42%) TCP/IP
4 1064 (24.51%) LAN
5 1050 (24.19%) WAN
6 887 (20.43%) VPN
7 507 (11.68%) SAN
8 495 (11.40%) Network Security
9 488 (11.24%) Internet
10 440 (10.14%) MPLS
11 436 (10.04%) BGP
12 430 (9.91%) Wireless
13 429 (9.88%) VLAN
14 408 (9.40%) VoIP
15 389 (8.96%) SSL
16 387 (8.91%) OSPF
17 351 (8.09%) HTTP
18 324 (7.46%) Cisco ASA
19 314 (7.23%) SMTP
20 258 (5.94%) LDAP
Database & Business Intelligence
1 707 (16.29%) SQL Server
2 233 (5.37%) MySQL
3 162 (3.73%) SQL Server 2008
4 101 (2.33%) SQL Server 2012
5 70 (1.61%) Relational Database
6 61 (1.41%) SQL Server 2005
7 52 (1.20%) Oracle Database
8 48 (1.11%) NoSQL
9 47 (1.08%) Amazon RDS
10 45 (1.04%) PostgreSQL
11 41 (0.94%) MongoDB
12 32 (0.74%) SQL Server 2014
12 32 (0.74%) SQL Server Integration Services
13 29 (0.67%) Big Data
14 25 (0.58%) SQL Server Reporting Services
15 24 (0.55%) Apache Cassandra
16 23 (0.53%) Redis
17 21 (0.48%) Data Warehouse
18 17 (0.39%) Hadoop
19 16 (0.37%) SQL Server Analysis Services
Development Applications
1 171 (3.94%) Git (software)
2 137 (3.16%) Jenkins
3 49 (1.13%) Subversion
4 42 (0.97%) JIRA
5 40 (0.92%) Team Foundation Server
6 34 (0.78%) MSI
7 33 (0.76%) TeamCity
8 31 (0.71%) Visual Studio
9 28 (0.65%) Vagrant
10 17 (0.39%) Octopus Deploy
11 15 (0.35%) Atlassian Bamboo
11 15 (0.35%) Maven
12 13 (0.30%) WinDbg
13 12 (0.28%) Ant
13 12 (0.28%) Mercurial
14 10 (0.23%) Bitbucket
14 10 (0.23%) Visual Studio Tools for Office
15 9 (0.21%) MSBuild
15 9 (0.21%) Selenium
15 9 (0.21%) VSS/SourceSafe
General
1 565 (13.02%) Finance
2 295 (6.80%) Telecoms
3 109 (2.51%) Banking
4 95 (2.19%) Retail
5 92 (2.12%) Marketing
6 88 (2.03%) Publishing
7 69 (1.59%) Legal
8 66 (1.52%) Manufacturing
9 58 (1.34%) Back Office
10 48 (1.11%) Law
11 42 (0.97%) Advertising
12 33 (0.76%) Games
13 30 (0.69%) French Language
14 26 (0.60%) Spanish Language
15 22 (0.51%) Electronics
15 22 (0.51%) Financial Institution
16 16 (0.37%) Billing
17 15 (0.35%) Aerospace
17 15 (0.35%) Automotive
17 15 (0.35%) German Language
Job Titles
1 658 (15.16%) Network Engineer
2 565 (13.02%) Infrastructure Engineer
3 550 (12.67%) Analyst
4 538 (12.39%) Support Engineer
5 426 (9.81%) Administrator
6 320 (7.37%) Systems Administrator
7 299 (6.89%) IT Support
8 297 (6.84%) 3rd Line Engineer
9 262 (6.04%) Support Analyst
10 246 (5.67%) IT Engineer
11 215 (4.95%) 2nd Line Support
12 209 (4.81%) Systems Engineer
13 207 (4.77%) Windows Engineer
14 201 (4.63%) Architect
15 199 (4.58%) 3rd Line Support
16 193 (4.45%) Linux Engineer
17 164 (3.78%) Senior Network Engineer
18 162 (3.73%) Infrastructure Support
19 159 (3.66%) Cisco Engineer
20 139 (3.20%) 2nd Line Engineer
Libraries, Frameworks & Software Standards
1 256 (5.90%) Web Services
2 162 (3.73%) .NET
3 133 (3.06%) LAMP
4 126 (2.90%) HTML
5 94 (2.17%) 802.1X
6 86 (1.98%) CSS
7 53 (1.22%) XML
8 52 (1.20%) REST
9 50 (1.15%) Middleware
10 48 (1.11%) ASP.NET
11 38 (0.88%) HTML5
12 33 (0.76%) LEMP Stack
13 31 (0.71%) AngularJS
13 31 (0.71%) SOAP
14 28 (0.65%) jQuery
15 26 (0.60%) Ajax
16 25 (0.58%) CSS3
16 25 (0.58%) RESTful
17 24 (0.55%) JSON
17 24 (0.55%) Node.js
Miscellaneous
1 666 (15.34%) Data Centre
2 419 (9.65%) Analytical Skills
3 228 (5.25%) Clustering
4 210 (4.84%) Computer Science
5 198 (4.56%) Management Information System
6 149 (3.43%) PKI
7 134 (3.09%) Driving Licence
8 107 (2.46%) Blackberry
9 89 (2.05%) Replication
10 88 (2.03%) Public Cloud
11 72 (1.66%) Video Conferencing
12 66 (1.52%) Linux Command Line
13 52 (1.20%) Client/Server
14 50 (1.15%) NHS
15 47 (1.08%) Hybrid Cloud
16 44 (1.01%) iPad
16 44 (1.01%) User Experience
17 43 (0.99%) CMDB
18 42 (0.97%) Distributed Denial-of-Service
19 39 (0.90%) iPhone
Operating Systems
1 2643 (60.88%) Windows
2 1606 (37.00%) Windows Server
3 1322 (30.45%) Linux
4 1067 (24.58%) Windows Server 2008
5 1013 (23.34%) Windows Server 2012
6 526 (12.12%) Windows 7
7 419 (9.65%) Windows Server 2003
8 369 (8.50%) Unix
9 298 (6.86%) Windows 10
10 275 (6.33%) Red Hat Enterprise Linux
11 257 (5.92%) Windows 8
12 151 (3.48%) CentOS
13 139 (3.20%) Ubuntu
14 127 (2.93%) Mac OS X
15 125 (2.88%) Windows XP
16 112 (2.58%) Solaris
17 81 (1.87%) Debian
18 60 (1.38%) Android
19 54 (1.24%) Apple iOS
20 50 (1.15%) Mac OS
Processes & Methodologies
1 860 (19.81%) ITIL
2 380 (8.75%) Load Balancing
3 343 (7.90%) Disaster Recovery
4 338 (7.79%) DevOps
5 296 (6.82%) High Availability
6 258 (5.94%) Service Management
7 255 (5.87%) Agile Software Development
8 244 (5.62%) Network Design
9 240 (5.53%) Migration
10 239 (5.51%) Service Delivery
11 232 (5.34%) Project Management
12 230 (5.30%) Change Management
13 209 (4.81%) Configuration Management
14 185 (4.26%) Network Management
15 181 (4.17%) Open Source
16 175 (4.03%) Problem Management
17 170 (3.92%) Information Security
18 168 (3.87%) Root Cause Analysis
19 163 (3.75%) Mentoring
20 143 (3.29%) Kalman Filter
Programming Languages
1 699 (16.10%) SQL
2 540 (12.44%) PowerShell
3 401 (9.24%) Python
4 310 (7.14%) Perl
5 269 (6.20%) Bash Shell
6 247 (5.69%) Java
7 201 (4.63%) PHP
8 141 (3.25%) JavaScript
9 131 (3.02%) Ruby
10 127 (2.93%) C#
11 105 (2.42%) Shell Script
12 77 (1.77%) C
13 67 (1.54%) VBScript
14 66 (1.52%) VB
15 57 (1.31%) C++
16 33 (0.76%) T-SQL
17 28 (0.65%) VB.NET
18 20 (0.46%) Go
19 19 (0.44%) Groovy
20 18 (0.41%) VBA
Qualifications
1 905 (20.85%) Cisco Certification
2 550 (12.67%) CCNP
3 540 (12.44%) Microsoft Certification
4 512 (11.79%) CCNA
5 442 (10.18%) Degree
6 362 (8.34%) MCSE
7 258 (5.94%) Security Cleared
8 177 (4.08%) MCSA
9 171 (3.94%) CCIE
10 168 (3.87%) MCP
11 162 (3.73%) SC Cleared
12 133 (3.06%) VMware Certified Professional (VCP)
13 101 (2.33%) MCITP
14 73 (1.68%) CISSP
15 57 (1.31%) DV Cleared
16 50 (1.15%) Citrix Certification
17 48 (1.11%) ITIL Certification
18 42 (0.97%) LPIC
19 39 (0.90%) BPSS Clearance
20 36 (0.83%) ITIL Foundation Certificate
Quality Assurance & Compliance
1 304 (7.00%) SLA
2 181 (4.17%) PCI DSS
3 98 (2.26%) ISO/IEC 27001
4 39 (0.90%) Disclosure Scotland
5 30 (0.69%) QA
6 25 (0.58%) Sarbanes-Oxley
7 9 (0.21%) ISO27002
8 8 (0.18%) ISO 9001
9 7 (0.16%) FISMA
9 7 (0.16%) GCP
9 7 (0.16%) PMO
10 4 (0.092%) SSAE 16
11 3 (0.069%) GPG13
12 2 (0.046%) Cyber Essentials
12 2 (0.046%) GDPR
12 2 (0.046%) ISO22301
13 1 (0.023%) COBIT
13 1 (0.023%) HMG Security Policy Framework
13 1 (0.023%) ISAE 3402
13 1 (0.023%) PA-DSS
System Software
1 2343 (53.97%) Active Directory
2 1212 (27.92%) VMware Infrastructure
3 687 (15.83%) Hyper-V
4 345 (7.95%) vSphere
5 267 (6.15%) XenApp
6 179 (4.12%) VMware ESXi
7 163 (3.75%) VMware ESX
8 109 (2.51%) NFS
8 109 (2.51%) XenDesktop
9 106 (2.44%) Terminal Services
10 95 (2.19%) Firmware
11 91 (2.10%) Virtual Machines
12 72 (1.66%) Virtual Servers
13 71 (1.64%) Docker
14 67 (1.54%) vCloud
15 58 (1.34%) XenServer
16 56 (1.29%) Microsoft App-V
17 51 (1.17%) Samba
18 42 (0.97%) Squid
19 40 (0.92%) VMware Workstation
Systems Management
1 434 (10.00%) SCCM
2 326 (7.51%) Puppet
3 307 (7.07%) SCOM
4 210 (4.84%) Nagios
5 185 (4.26%) Ansible
6 157 (3.62%) Backup Exec
7 154 (3.55%) Opscode Chef
8 150 (3.46%) WSUS
9 106 (2.44%) NetBackup
10 95 (2.19%) Microsoft Clustering
11 56 (1.29%) Red Hat Satellite
12 46 (1.06%) Norton AntiVirus
13 42 (0.97%) Cisco Prime
13 42 (0.97%) Host Intrusion Detection System
14 40 (0.92%) AirWatch
15 39 (0.90%) ZABBIX
16 35 (0.81%) Cacti
17 34 (0.78%) Salt
18 31 (0.71%) HAProxy
19 30 (0.69%) Network Intrusion Detection System
Vendors
1 1770 (40.77%) Microsoft
2 1744 (40.18%) VMware
3 1422 (32.76%) Cisco
4 599 (13.80%) Citrix
5 398 (9.17%) HP
5 398 (9.17%) Juniper
6 330 (7.60%) Red Hat
7 282 (6.50%) CheckPoint
8 273 (6.29%) Palo Alto
9 259 (5.97%) F5
10 210 (4.84%) Oracle
11 181 (4.17%) Dell
12 173 (3.99%) NetApp
12 173 (3.99%) SolarWinds
13 170 (3.92%) Apple
14 139 (3.20%) Veeam
15 138 (3.18%) Symantec
16 124 (2.86%) EMC
16 124 (2.86%) IBM
17 117 (2.70%) Avaya
City, London
Harrington Starr
Salary: £40000 - £60000 per annum
Posted: Yesterday
Nottingham, Nottinghamshire
Rebel Recruitment
Salary: From £28,000 to £35,000 per annum
Posted: Yesterday
Westerham, Kent
Searchability
Salary: £22000 - £30000 per annum
Posted: Yesterday
Leeds, West Yorkshire
Senitor Associates
Salary: £20000 - £22000 per annum
Posted: 2 days ago
East London
Millshill Recruitment Ltd
Salary: £32000 - £35000 per annum
Posted: Yesterday
Malvern, Worcestershire
Senitor Associates
Salary: £18000 - £20000 per annum
Posted: Yesterday
Guildford, Surrey
Senitor Associates
Salary: £18000 - £22000 per annum + benefits
Posted: Yesterday
Oxfordshire
ARC IT Recruitment Ltd
Salary: Up to £36k+ benefits
Posted: Yesterday
Blackburn, Lancashire
Searchability
Salary: £14000 - £16000 per annum
Posted: Yesterday
Coventry, West Midlands (County)
Senitor Associates
Salary: £20000 - £25000 per annum + Great Company + Bonus
Posted: Yesterday
London
Digitech Resourcing Ltd
Salary: From £70,000 to £85,000 per annum plus 15% bonus and benefits
Posted: Yesterday
City, London
Harvey Nash plc
Salary: £28000 per annum
Posted: 2 days ago
City, London
Senitor Associates
Salary: £30000 - £35000 per annum
Posted: 3 days ago
London
Durlston Partners
Salary: Up to £75,000 per annum + Bonus + Benefits
Posted: 2 days ago
London
Digitech Resourcing Ltd
Salary: From £20,000 to £28,000 per annum + Package
Posted: Yesterday
Birmingham, West Midlands (County)
Senitor Associates
Salary: £18000 - £19000 per annum + Great Benefits + Company
Posted: Yesterday
Epsom, Surrey
RM plc
Salary: £23000 - £28000 per annum + benefits
Posted: 2 days ago
Warrington, Cheshire
Uniting Ambition
Salary: £40k - 50k per year + Holidays, pension, bonus and flexible working!
Posted: Yesterday
Wakefield, West Yorkshire
Owen Daniels Consultancy
Salary: Up to £45,000 per annum
Posted: Yesterday
Wakefield, West Yorkshire
Owen Daniels Consultancy
Salary: Up to £45,000 per annum
Posted: Yesterday
Castleford, West Yorkshire
Searchability
Salary: £16000 - £20000 per annum
Posted: Yesterday
Newcastle Upon Tyne, Tyne and Wear
Reed Technology
Salary: £20000 - £26000 per annum + on call + bonus
Posted: 5 days ago
Cardiff, South Glamorgan
CPS Group UK
Salary: £35000 - £45000 per annum + Excellent Pension + Benefits
Posted: Yesterday
Watford, Hertfordshire
HAYS INFORMATION TECHNOLOGY
Salary: £45000.00 - £60000.00 per annum
Posted: 2 days ago
Castleford, West Yorkshire
Searchability
Salary: £16000 - £18000 per annum
Posted: Yesterday
Hereford, Herefordshire
Oscar
Salary: £38000 - £45000 per annum
Posted: 3 days ago
Stockport, Cheshire
HAYS INFORMATION TECHNOLOGY
Salary: £20000.00 - £24000.00 per annum
Posted: 2 days ago
Manchester, Lancashire
Morson International
Salary: £28000 - £34000 per annum + Pension Health
Posted: Yesterday
Barnsley, South Yorkshire
Davanti Solutions
Salary: From £40,000 to £45,000 per annum
Posted: 2 days ago
Sandy, Bedfordshire
Latcom Ltd
Salary: From £20,000 to £26,000 per annum + Training + Good Benefits
Posted: Yesterday