Here is a list of LGBTQIA+ awareness dates for 2025:
January
- 4th: Gay Uncles’ Day
- 29th: National Transgender Visibility Day (Brazil)
February
- All Month: LGBT History Month (UK)
- 19th–25th: Black Queer History Week
- 20th: Trans Men and Transmasculine Day
March
- 1st: Zero Discrimination Day
- 31st: Trans Day of Visibility
April
- 6th: International Asexuality Day
- 25th: Genderqueer Visibility Day
- 26th: Lesbian Visibility Day
May
- 17th: International Day Against Homophobia, Biphobia, and Transphobia (IDAHOBIT)
- 24th: Pansexual and Panromantic Awareness Day
June
- All Month: Pride Month
- 5th: Aromantic Visibility Day
- 16th: Genderfluid Visibility Day
July
- 14th: Non-Binary People’s Day
- 26th: Polysexual and Polyromantic Visibility Day
August
- All Month: Transgender History Month (US)
- 11th: Gay Uncles’ Day
September
- 16th–22nd: Bisexual Awareness Week
October
- All Month: LGBTQ History Month (US, Australia, Canada)
- 8th: International Lesbian Day
- 11th: National Coming Out Day
- 26th: Intersex Awareness Day
November
- 13th–19th: Trans Awareness Week
- 20th: Transgender Day of Remembrance
- 23rd: Polyamory Day
December
- 1st: World AIDS Day
- 8th–12th: Pan Week
You can find more details on these dates in the Wikipedia overview and at SexualDiversity.org.