📅 JoyPixels: July 17 (World Emoji Day).

📅 Facebook: May 14 (birthday of founder Mark Zuckerberg previously a generic 3rd).

📅 Twitter: Jul 17 (changed from March 21 which was the founding date of Twitter in 2006 previously July 15, the date Twitter launched).

📅 WhatsApp: Feb 24 (incorporation of WhatsApp in 2009).

📅 Samsung: July 17 (World Emoji Day previously a monthly calendar turned to May).

📅 Google: July 17 (World Emoji Day previously a generic monthly calendar).

📅 Apple: July 17 (Mac iCal announcement in 2002, later World Emoji Day).Major platforms previously used a variety of dates on this calendar, but have changed in recent years to also show July 17, to avoid confusion on World Emoji Day. Some vendors still feature easter egg dates marking company founding or other milestones: Since 2014 Emojipedia has celebrated World Emoji Day on July 17, because of this emoji.

This date was first used by Apple as a reference to when iCal for Mac premiered at MacWorld Expo in 2002. Also used for various content concerning time, date, schedules, planning, and observances and occasions more generally. Like 📆 Tear-Off Calendar and 🗓️ Spiral Calendar, commonly used as an icon for specific upcoming events or memorial dates. Generally depicted as a page torn off from a daily desk calendar, displaying month and day on a white, square page. However, if you use both Firefox and Mozilla's e-mail client Thunderbird, Sunbird is an ideal calendar component although most would probably be better sticking to Outlook's calendar.A single date on a calendar. It also doesn't seem to be updated very often and looks like that Mozilla have put it on the back-burner for now.

On the downside, Sunbird doesn't feature integration with either iCal or Google Calendar, which you'd expect as standard really. You can also extend Sunbird with a series of free add-ons from the Sunbird site. Like most of Mozilla's products, it also seems very safe and allows you to set a password to access it.

There's also a powerful search tool that finds events by keyword. Adding an event simply involves clicking on the 'Add Event' box in the top left-hand corner. The interface of Mozilla Sunbird is very simple.

Mozilla calendar