Hi DeadMan, I use a combination Animal Alphabet Wardrobe method with Major Method pegs and other mnemonic systems to create my own hybrid system.
For instance, BCE images are coloured pink, and CE images are coloured blue.
For example, 776 BCE First Olympiad in Athens
BCE=pink coloured imagery (I also hear La vie en rose ** [Edith Piaf] for aural hooks)
700s = G = Giraffe
76 = cash, cage, gush, gash, whatever your major peg is (or Dominic imagery [Gilbert &Sullivan/Gassing/Geese], Memory Palace can be the Parthenon or someplace in Greece or a Restaurant or an image of Pallas Athena [Minerva]—or a memory lane walk
[You can use a calendar mnemonic too if you want for July; but you want to keep it simple and powerful in my view.]
Here is another one
In 1492 Columbus sailed the ocean blue [You can use poems, jingles, acronyms, whatever]
1400s = Newt, Narwhal, Nightingale, Nighthawk?
Colour = Blue [Song Roy Orbison Blue Angel]
Major method peg word 92 [bun, bean, pine, pun, pawn]
I see all kinds of Narwhals or Newts or whatever, swarming over Chris as he is trying to eat a BuN on his ship.
Dominic system NB Napoleon Bonaparte fighting Chris on his ship [fighting over that bun?] Hmm a mixture of Major and Dominic.
CE era can be blue and auditory Roy Orbison singing Blue Angel.
2699 AD = Zebra
26th letter = Zebra
99 = BB [Major]
99 = NN [Dominic]
So it is a mixture of several methods or systems:
Florian Dellé’s Wardrobe Method = https://memory-sports.com/blog/memory-techniques/the-wardrobe-method/
Alphabet Animal Method as century pegs
Calendar method to remember precise dates—if you want to remember time use the 24-hour clock and you can have 0000 [Ozzy Osbourne biting the head of the proverbial chicken or Zeus Sizzling in SauCe]
Colour method to differentiate BCE and CE and Music/Aural for Pink and Blue
Dominic O’Brien’s 00–99 PAO or Major method [Aimé Paris describes it first—I think—in his Cours sur la mnémotechnie, because Grégoire de Feinaigle came later]
I have from 00 = Zeus SeiZing/SiZzling SauCe to 99 = BoBo [gorilla] BoPping with a hammer fist a BaBy or Bee Bopping Baby or whatever.
Fold in trips down memory lane [history memory walks where you place your imagery] and you have an easy 1000 [or way more] History dates and events and you have Method of Loci or Location-based mnemonic system.
It works well for me.
Another method you might consider is SEM cubed;;but mine has more memory hooks (I think) to encode memories.