Ruling on taking part in some annual celebrations

Description

What is the Islamic ruling on taking part in some annual celebrations and occasions, such at the International Day of the Family, the International Day for Disabled People, the International Year of Older Persons. Also what is the ruling on taking part in some religious celebrations such as al-Israa’ wa’l-Mi’raaj (the anniversary of the Prophet’s Night Journey and ascent into the heavens), al-Mawlid al-Nabawi (Prophet’s Birthday) and al-Hijrah (anniversary of the Prophet’s migration), by preparing leaflets or holding lectures and Islamic conferences for the purposes of reminding and exhorting the people (about their religion)?