Cover - USD ($)	12 Months Ended
	Dec. 31, 2023	Apr. 15, 2024	Jun. 30, 2023
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity File Number	001-41584
Entity Registrant Name	ALPHATIME ACQUISITION CORP
Entity Central Index Key	0001889106
Entity Incorporation, State or Country Code	E9
Entity Address, Address Line One	500 5th Avenue
Entity Address, Address Line Two	Suite 938
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10110
City Area Code	(347)
Local Phone Number	627-0058
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	true
Entity Public Float			$ 75,869,496
Entity Common Stock, Shares Outstanding		6,873,426
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction	false
Auditor Firm ID	1195
Auditor Name	UHY LLP
Auditor Location	New York, New York
Units Each Consisting of One Ordinary Share One Redeemable Warrant and One Right [Member]
Title of 12(b) Security	Units, each consisting of one ordinary share, one redeemable warrant and one right
Trading Symbol	ATMCU
Security Exchange Name	NASDAQ
Ordinary Shares Par Value 0.0001 Per Share [Member]
Title of 12(b) Security	Ordinary Shares, par value $0.0001 per share
Trading Symbol	ATMC
Security Exchange Name	NASDAQ
Warrants Each Whole Warrant Exercisable for One Ordinary Share at Exercise Price of 11.50 Per Share [Member]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one ordinary share at an exercise price of $11.50 per share
Trading Symbol	ATMCW
Security Exchange Name	NASDAQ
Rights Each Right Entitling Holder Thereof to Onetenth of One Ordinary Share [Member]
Title of 12(b) Security	Rights, each right entitling the holder thereof to one-tenth of one ordinary share
Trading Symbol	ATMCR
Security Exchange Name	NASDAQ