I found this site where you can enter any date and it tells you what the Number 1 hits were that day. I entered my birthdate and now I know from every single year since then, for the US and the UK.

US Charts:

1985 — Phil Collins – One More Night
1986 — Falco – Rock Me Amadeus
1987 — Club Nouveau – Lean on Me
1988 — Michael Jackson – Man in the Mirror
1989 — Mike and The Mechanics – The Living Years
1990 — Alannah Myles – Black Velvet
1991 — Gloria Estefan – Coming Out of the Dark
1992 — Vanessa Williams – Save the Best for Last
1993 — Snow – Informer
1994 — Ace of Base – The Sign
1995 — Madonna – Take a Bow
1996 — Celine Dion – Because You Loved Me
1997 — Puff Daddy feat. Mase – Can’t Nobody Hold Me Down
1998 — Will Smith – Gettin’ Jiggy Wit It
1999 — Cher – Believe
2000 — Destiny’s Child – Say My Name
2001 — Shaggy feat. Rayvon – Angel
2002 — Jennifer Lopez feat. Ja Rule – Ain’t It Funny
2003 — 50 Cent – In Da Club
2004 — Usher feat. Lil Jon and Ludacris – Yeah!
2005 — 50 Cent feat. Olivia – Candy Shop
2006 — Ne-Yo – So Sick
2007 — Fergie feat. Ludacris – Glamorous
2008 — Usher feat. Young Jeezy – Love in This Club

UK Charts:

1985 — Philip Bailey and Phil Collins – Easy Lover 
1986 — Cliff Richard and The Young Ones – Living Doll
1987 — Mel and Kim – Respectable
1988 — Aswad – Don’t Turn Around
1989 — Madonna – Like A Prayer
1990 — Snap – The Power
1991 — Chesney Hawkes – The One And Only
1992 — Shakespears Sister – Stay
1993 — Shaggy – Oh Carolina
1994 — Doop – Doop
1995 — Cher, Chrissie Hynde, Neneh Cherry and Eric Clapton – Love Can Build A Bridge
1996 — Prodigy – Firestarter
1997 — Spice Girls – Mama / Who Do You Think You Are
1998 — Run DMC vs Jason Nevins – It’s Like That
1999 — B*Witched – Blame It On The Weatherman
2000 — Geri Halliwell – Bag It Up
2001 — Hear’Say – Pure And Simple
2002 — Gareth Gates – Unchained Melody
2003 — Gareth Gates – Spirit In The Sky
2004 — Usher – Yeah
2005 — Tony Christie feat. Peter Kay – (Is This The Way To) Amarillo
2006 — Orson – No Tomorrow
2007 — The Proclaimers feat. Brian Potter and Andy Pipkin – I’m Gonna Be (500 Miles)
2008 — Estelle – American Boy

What’s interesting about it that there are songs there that I like although I usually don’t like that kind of music (like Yeah, or American Boy, or Believe, or Informer). There’s no song in there that I can’t stand at all, although there are some songs I don’t care that much about (Man in the Mirror).  And there are some songs I really love (Firestarter, It’s Like That, Rock Me Amadeus, Black Velvet, No Tomorrow).

I don’t know if you could pull up any other day, take the Number 1 Singles and I would like that many songs of that list. Which makes me wonder, why that is the case…