Alien chronology... is wrong?!

2023 Peter Weyland hosts a TED Talk https://www.weylandindustries.com/tedtalk

2088 Elizabeth Shaw & Charlie Holloway discover cave paintings that unlock a star map.

2092

January 7th - Ellen Ripley is born in Olympia, Luna, UA.

2093 

Prometheus: The lost mission. The team arrives at LV-223.

2099

May 15th - Dallas graduates from Mercaton flight academy.

2100

May 23rd - Kane graduates with honours from Weatherly Private School.

2101

M-Class Starcruiser Nostromo (180924609) constructed.

2104 Covenant Colony Vessel received a unknown signal and investigate

2111

June 24th - Amanda Ripley is born

2116

USCSS Nostromo refitted as a commercial towing vehicle.

December 21st - Ripley completes the Weyland-Yutani Horizons Beyond program with honours.

2120

January 4th - Dallas is given command of USCSS Nostromo (flight status B).

January 5th - Kane and Lambert are assigned to the USCSS Nostromo as Executive Officer and Navigator respectively.

January 7th - USCSS Nostromo leaves the Solomons bound for Thedus.

August 10th - Ellen Ripley joins crew of USCSS Nostromo en route to Thedus, as Warrant Officer.

September 10th - Parker and Brett join the crew of the USCSS Nostromo en route to Thedus, as Engineer and Engineering Tech respectively.

2121

April - USCSS Nostromo arrives at Thedus and commences cargo loading.

June 12th - USCSS Nostromo leaves Thedus with 20,000,000 tonnes of mineral ore, bound for Earth. Her science officer is replaced with Ash.

2122 (BEGINING OF THE 1ST ALIEN MOVIE)

June 3rd - 6th - USCSS Nostromo encounters what is assumed to be a distress signal emanating from the planetoid designated LV-426, in the Zeta-2-Reticuli system. Captain Dallas, Executive Officer Kane, and Navigator Lambert investigate a derelict spacecraft that contains the fossilised remains of an unknown alien species, and thousands of Xenomorph eggs. One of the Xenomorph spore (‘facehugger’) attaches itself to Kane’s face and plants an embryo in his throat, which then hatches, killing the host.

Source:

http://screenrant.com/alien-movie-series-timeline-covenant-prometheus-explained/

 http://alienanthology.wikia.com/wiki/Alien_Universe_Timeline

http://avp.wikia.com/wiki/Timeline

No. Fan wikia and article in magazine (mb based on wikia) is not competent source. Need official words.

Where did the date 2122 come from?

I did watch a video on youtube talking about the clip where one of the crew is talking to mother and on an earlier VCR release which was a directors cut did have the date year. Although it was edited out later(not sure why). I can't find the video now though but I will try to find the reference.

Thats good Question, i think sometimes we just have to rely on and accept what is said that has NOT been shown in the Movies.   I am sure and i will have to Watch Aliens again that there is a mention in regards to Burke about a June 79 Date, which we can assume is June 2179.

I am sure Amanda was said to have Died 2 Years prior to Ripley being rescued but the DOB for Amanda on the Document shown to Ripley is NOT in any Date Format we use on Earth...  so its more like a Star Date.

Here is a image of it, Date of Birth 24.6.59.20. and Date of Death 12.23.20. ??  these make No Sense and the 24.6.59.20. could have more Digits after, example 24.6.59.20.55 etc

There are a lot of Flaws with Dates in those Movies..

I don't think we can really trust the date about Amanda. Burke could have easilly lied. 

Honestly, getting caught up in the axles of timeline ruins the enjoyment. Remember that different people were involved in each movie and may have just pulled dates out of their arses. 

I think to a degree it did-not matter what Time-Line we was in, the Advent of the Prequels i think makes it more important to give some detail/context to the Time-Line which they clearly do.

But indeed while the Prequels have Dates Set in Stone by Virtue of the Movies, the other Movies in the Franchise do-not clearly specify any dates.  so we could ponder if they are indeed 28 years after the End of the First Prequel, or 50, or 100 years. Would this matter so much?

I think one cause for concern with the Time-Line is the route of Alien Covenant where being set 18 Years Prior to ALIEN causes some Conflict for some in regards to how the Derelict looked like it had been on LV-426 for MUCH more than 18 years.... we have YET to conclude the Prequels however, so it could be shown that the Derelict/Space Jockey may have been there a LONG time but the Egg Cargo not so.... However we would still have to Question what then happened to the Space Jockey and that Acid Hole, and WHAT was the Derelict carrying if it Did-Not have Eggs all those many years back.

These sorts of Questions would NOT have been a issue had Alien Covenant not had to become a more Direct Prequel, and they stuck to the Original Idea for the Event. (Derelict)

Again i think you just have to accept what we are shown/told that has not been shown in the Movies in some cases....   But i understand some would not be willing to accept anything that is NOT shown in the Movies, while sometimes using information from Books/Comics and Games as providing more Definate Dates/Events as Canon, as opposed to Blu-Ray/DVD Extras and comments by Directors etc.

We get a lot of such Cherry Picking.

so if we ONLY consider what the Movies Show, then Indeed the Date for Alien becomes ambiguous with No Clear indication. 

But as DK mentions... should it really matter?

Again i think the ONLY thing that kind of BUGS the Time-Line would be the Route the Prequels take IF we conclude that with NO David there was NO Derelict/Eggs on LV-426, which would mean that IF we say Alien was set in 2122 then those Eggs (maybe Derelict) could have been on LV-426 for No-Longer than say 10 years!

Which certainly in ALIEN it looks like it was there for MUCH Longer.... but again until we CONCLUDE the Prequels its open to debate and subject to CHANGE.