Angel revealed to Buffy that he was 241 years old in 2.02 Some Assembly Required. He also said this in 2.05 Reptile Boy. This means he would have been born in 1755 …

While Joss’ maths doesn’t bear close scrutiny when it comes to deducing Angel’s birth year, there is another factor that complicates his age. We know that Angel is 241 years …

In the episode 1.07 Angel, it appeared to be established that the restoration of Angel’s soul took place sixty years ago, or sometime in the 1920s. However, in 2.21 Becoming (Part One) …

Giles says Spike is “barely two hundred”, according to his books, in 2.03 School Hard. His books must be a little out, because later episodes (such as The Initiative) make it …

How did Spike get all the way to Uganda in Africa in the timespan between 6.19 Seeing Red and 6.20 Villains? We know from 2.13 Surprise that he can’t travel by plane. Angel …

In The Initiative, Spike said he was 126 years old. However in 5.07 Fool For Love, we discover he was vamped in 1880 which would make him about 6 yrs old …

Buffy arrives at the club in 2.07 Lie To Me an hour or two early to talk Ford out of becoming a vampire. Spike arrives a few minutes later - so …

Buffy tells Xander in 6.06 All The Way that she was only out of commission for 3 months. In 6.03 After Life, Spike tells Buffy she was dead for 147 days - …

When we first see the armoured car in 6.19 Seeing Red, it seems to be night time, but when Warren tries to tip the car, it is dusk.

Willow says she’s spoken to Giles in London in 6.03 After Life. As he only left earlier that day there’s no way he could have made it all the way to …

In 4.07 The Initiative, Spike says that he’s only 126, but in 2.03 School Hard, Giles said that he was “barely 200″.

During the Mayor’s speech to the class of 1999 in 3.22 Graduation Day (Part Two), he comments on Sunnydale’s centennial:

“The one hundredth anniversary of the founding of Sunnydale.”

That would mean …

When we first see a shot of the clock tower in 4.10 Hush, the time is almost one o’clock. The camera cuts to a shot from inside, looking out at the …

Buffy mentions in 7.10 Bring On The Night that it is December. If this is true, the time frame between 7.07 Conversations With Dead People (which was set on November 12th) and …

In 2.14 Innocence, Xander tells Cordelia to meet him at Willow’s house in thirty minutes, wearing “something trashier”. Then Buffy has a dream and goes to school the next day. It’s …

In 2.09 What’s My Line? (Part One), Buffy leaves the school in broad daylight but gets home at night. She can’t have been wandering the streets as she is nervous of …

In 3.14 Bad Girls, the day after Finch’s murder, Buffy went to Faith’s place. This episode begins with Buffy waking up from a nightmare, then she goes to school. This means …

Glory’s minions kidnap Spike at night in 5.18 Intervention but it’s daytime by the time they arrive at Glory’s place with the vampire.